When Repository.close() decrements the useCount to 0 currently the cache
immediately evicts the repository from WindowCache and RepositoryCache.
This leads to I/O overhead on busy repositories because pack files and
references are inserted and deleted from the cache frequently.
This commit defers the eviction of a repository from the caches until
last use of the repository is older than time to live. The eviction is
handled by a background task running periodically.
Add two new configuration parameters:
* core.repositoryCacheExpireAfter: cache entries are evicted if the
cache entry wasn't accessed longer than this time in milliseconds
* core.repositoryCacheCleanupDelay: defines the interval in milliseconds
for running a background task evicting expired cache entries. If set to
-1 the delay is set to min(repositoryCacheExpireAfter, 10 minutes). If
set to 0 the time based eviction is switched off and no background task
is started. If time based eviction is switched off the JVM can still
evict cache entries if heap memory is running low.
Change-Id: I4a0214ad8b4a193985dda6a0ade63b70bdb948d7 Also-by: Matthias Sohn <matthias.sohn@sap.com> Also-by: Hugo Arès <hugo.ares@ericsson.com> Also-by: Sasa Zivkov <sasa.zivkov@sap.com>
This functionality is implemented in Gerrit ConfigUtil class. Add it to
JGit so it can eventually be remove from Gerrit.
Change-Id: I2d6564ff656b6ab9424a9360624061c94fd5f413 Signed-off-by: Hugo Arès <hugo.ares@ericsson.com> Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Hugo Arès [Wed, 15 Jun 2016 18:40:05 +0000 (14:40 -0400)]
Config load should not fail on unsupported or nonexistent include path
1f86350 added initial support for include.path. Relative path and path
with tilde are not yet supported but config load was failing if one of
those 2 unsupported options was encountered. Another problem was that
config load was failing if the include.path file did not exist.
Change the behavior to be consistent with native git. Ignore unsupported
or nonexistent include.path.
Bug: 495505
Bug: 496732
Change-Id: I7285d0e7abb6389ba6983e9c46021bea4344af68 Signed-off-by: Hugo Arès <hugo.ares@ericsson.com>
Matthias Sohn [Sun, 19 Jun 2016 10:45:37 +0000 (12:45 +0200)]
Allow using JDK 7 bootclasspath when compiling JGit using Java 8
When compiling jgit using Java 8 set system property JDK_HOME to
JAVA_HOME path of JDK7 installation to compile against JDK 7 class
libraries. Otherwise jgit may hit runtime exceptions when running on
Java 7 (e.g. return type of ConcurrentHashMap.keySet() in JDK 8 class
library doesn't exist in JDK 7).
Marco Miller [Wed, 25 May 2016 20:45:13 +0000 (16:45 -0400)]
RefDirectory: remove ref lock file for following ref dir removal
Before this fix, ref directory removal did not work. That was because
the ref lock file was still in the leaf directory at deletion time.
Hence no deep ref directories were ever deleted, which negatively
impacted performance under large directory structure circumstances.
This fix removes the ref lock file before attempting to delete the ref
directory (which includes it). The other deep parent directories are
therefore now successfully deleted in turn, since leaf's content
(lock file) gets removed first.
So, given a structure such as refs/any/directory[/**], this fix now
deletes all empty directories up to -and including- 'directory'. The
'any' directory (e.g.) does not get deleted even if empty, as before.
The ref lock file is still also removed in the calling block's finally
clause, just in case, as before. Such double-unlock brought by this
fix is harmless (a no-op).
A new (private) RefDirectory#delete method is introduced to support
this #pack-specific case; other RefDirectory#delete callers remain
untouched.
Change-Id: I47ba1eeb9bcf0cb93d2ed105d84fea2dac756a5a Signed-off-by: Marco Miller <marco.miller@ericsson.com>
Matthias Sohn [Wed, 1 Jun 2016 14:09:40 +0000 (16:09 +0200)]
Merge branch 'master' into stable-4.4
* master:
Fix javadoc errors and unused imports introduced by ddd0fe25
RepoCommand: record manifest shallow recommendation in .gitmodules
RepoCommand: record manifest groups as submodule labels
Remove the deprecated TestRepository.getClock() method
Replace use of deprecated method Repository.getRef()
[findBugs] Prevent potential NPE in
FileLfsRepository.getOutputStream()
Better report on client side if push failed due to too large object
[findBugs] Prevent potential NPE in CloneCommand.init()
RepoCommand: remove --record-remote-branches
RepoCommandTest: Improve assertion message for remote branch recording
Change-Id: I4fbce4f84925a933fcc9a48058ed6793f5821b97 Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Stefan Beller [Tue, 31 May 2016 22:19:52 +0000 (15:19 -0700)]
RepoCommand: record manifest shallow recommendation in .gitmodules
Git core learned about the submodule.<name>.shallow option in
.gitmodules files, which is a recommendation to clone a submodule
shallow. A repo manifest may record a clone depth recommendation as
an optional field, which contains more information than a binary
shallow/nonshallow recommendation, so any attempted conversion may be
lossy. In practice the clone depth recommendation is either '1' or doesn't
exist, which is the binary behavior we have in Git core.
Change-Id: I51aa9cb6d1d9660dae6ab6d21ad7bae9bc5325e6 Signed-off-by: Stefan Beller <sbeller@google.com>
Stefan Beller [Tue, 31 May 2016 22:18:20 +0000 (15:18 -0700)]
RepoCommand: record manifest groups as submodule labels
Git core learned about attributes in pathspecs:
pathspec: allow querying for attributes
The pathspec mechanism is extended via the new
":(attr:eol=input)pattern/to/match" syntax to filter paths so that it
requires paths to not just match the given pattern but also have the
specified attrs attached for them to be chosen.
We intend to use these pathspec attribute patterns for submodule
grouping, similar to the grouping in repo. So the RepoCommand which
translates repo manifest files into submodules should propagate this
information along. This requires writing information to the
.gitattributes file instead of the .gitmodules file. For now we just
overwrite any existing .gitattributes file and do not care about prior
attributes set. If this becomes an issue we need to figure out how to
correctly amend the grouping information to an existing .gitattributes
file.
Change-Id: I0f55b45786b6b8fc3d5be62d7f6aab9ac00ed60e Signed-off-by: Stefan Beller <sbeller@google.com>
Matthias Sohn [Mon, 23 May 2016 23:12:20 +0000 (01:12 +0200)]
Better report on client side if push failed due to too large object
JGits PushCommand and BasePackPushConnection were throwing a generic
exception when the pushed pack-file was rejected by the server since it
contained too large objects. Teach JGit to better analyze the server's
response to detect this situation and throw a more specific exception.
Detect this situation by parsing the status line sent by the server.
This change only recognizes the response sent by a JGit based server.
All other servers which report such problems in a different way still
lead to a generic TransportExceptions.
Also see https://git.eclipse.org/r/#/c/46348/
Change-Id: I8d6d65e4585ebb3846f7207e7d1a2f82fa9cbd86 Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Matthias Sohn [Tue, 24 May 2016 14:59:15 +0000 (16:59 +0200)]
Merge branch 'master' into stable-4.4
* master:
JGit CLI: allow to call git init with specific directory
Redirect all Show output to outs
Support git config [include] section with absolute path(s)
Added filter for merge and non-merges commits.
[findBugs] Prevent potential NPE in FS_POSIX.readUmask()
[findBugs] Fix calculation of host header in SignerV4
Update Orbit repository to S20160518051658 for Neon RC2
Fix StashApply regarding handling of untracked files
GC should not pack objects only referenced by ORIG_HEAD,...
Make sure to overwrite files when "reset --hard" detects conflicts
Allow setting FileMode to executable when applying patches in
ApplyCommand
Fix config value get to return last instead of 1st just like git
Remove UTF-8 checking duplication in Config lib subclasses
Update Maven plugins
Fix type parameter in javadoc in TestRepository.delete(String ref)
TestRepository: Add delete() method
Make BaseReceivePack.setAtomic public
ReceivePack: Pass atomic setting from client to BatchRefUpdate
Change-Id: I5c9c5b7ccb23fb48b44b3da10b2c5d876d043d24 Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Matthias Sohn [Tue, 24 May 2016 14:44:03 +0000 (16:44 +0200)]
Merge branch 'stable-4.3' into stable-4.4
* stable-4.3:
Fix computation of id in WorkingTreeIterator with autocrlf and
smudging
Prepare 4.3.2-SNAPSHOT builds
JGit v4.3.1.201605051710-r
Scan loose ref before packed in case gc about to remove the loose
Fix possible NPEs when reporting transport errors
Fix calling of clean/smudge filters from Checkout,MergeCommands
Fix ApplyCommand when result of patch is an empty file
Change-Id: I829f06699f6670e519d04c927bdba4b82df29199 Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Fix computation of id in WorkingTreeIterator with autocrlf and smudging
JGit failed to do checkouts when the index contained smudged entries and
autocrlf was on. In such cases the WorkingTreeIterator calculated the
SHA1 sometimes on content which was not correctly filtered. The SHA1 was
computed on content which two times went through a lf->crlf conversion.
We used to tell the treewalk whether it is a checkin or checkout
operation and always use the related filters when reading any content.
If on windows and autocrlf is true and we do a checkout operation then
we always used a lf->crlf conversion on any text content. That's not
correct. Even during a checkout we sometimes need the crlf->lf
conversion. E.g. when calculating the content-id for working-tree
content we need to use crlf->lf filtering although the overall operation
type is checkout.
Often this bug does not have effects because we seldom compute the
content-id of filesystem content during a checkout. But we do need to
know whether a file is dirty or not before we overwrite it during a
checkout. And if the index entries are smudged we don't trust the index
and compute filesystem-content-sha1's explicitly.
This caused EGit not to be able to switch branches anymore on Windows
when autocrlf was true. EGit denied the checkout because it thought
workingtree files are dirty because content-sha1 are computed on wrongly
filtered content.
Bug: 493360
Change-Id: I1072a57b4c529ba3aaa50b7b02d2b816bb64a9b8 Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Marco Miller [Fri, 6 May 2016 17:18:38 +0000 (13:18 -0400)]
Support git config [include] section with absolute path(s)
As per [1], but limited to absolute paths indeed. No support yet for
tilde or $HOME expansion. Support for the --[no-]includes options
([1]) is not part of this commit scope either, but those options'
defaults are in effect as described in [1].
[1] https://git-scm.com/docs/git-config
Included path can be a config file that includes other path-s in turn.
An exception is thrown if too many recursions (circular includes)
happen because of ill-specified config files.
Change-Id: I700bd7b7e1625eb7de0180f220c707d8e7b0930b Signed-off-by: Marco Miller <marco.miller@ericsson.com> Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Fix StashApply regarding handling of untracked files
There was a bug regarding how JGit handled untracked files when applying
a stash. Problem was that untracked files are applied by doing a merge
of HEAD and untrackedFiles commit with a merge base of the stashed HEAD.
That's wrong because the untrackedFiles commit has no parent and
contains only the untracked files. Using stashed HEAD as merge base
leads to unneccessary conflicts on files not event included in the
untrackedFiles commit.
Imagine this graph directly before you want to apply a stash which was
based on 0. You want to apply the stash on current HEAD commit 5.
5 (HEAD,master)
/
0---+
\ \
1---3 (WIP on master)
/
2 (untracked files on master)
Imagine for a specific (tracked) file f
- commit 0 contains X
- HEAD contains Y
- commit 2 (the untracked files) does not contain file f
A merge of 2 and 5 with a merge base of 0 leads to a conflict. The 5
commit wants to modify the file and the 2 commit wants to delete the
file -> conflict.
If no merge base is set then the semantic is correct.
Thanks to Bow for finding this bug and providing the test case.
GC should not pack objects only referenced by ORIG_HEAD,...
There are references which are returned by
RefDatabase.getAdditionalRefs() which are allowed to point to
non-existing objects. These refs should not save objects from being
garbage collected. Examples for these references are ORIG_HEAD,
MERGE_HEAD, FETCH_HEAD and CHERRY_PICK_HEAD. Native git will not take
these references into account when doing a gc and therefore these
references may point to non-existing objects after a gc. Teach JGit's
GC to behave the same: ignore additional refs if they don't start with
"refs/". Examples for refs returned by getAdditionalRefs() which do
start with "refs/" are the bootstrap refs when using reftree's (see
commit 115f1ad3974d1162b33d1c8eff466019d1f249f3). See also
http://article.gmane.org/gmane.comp.version-control.git/294126.
Bug: 479697
Change-Id: I10e40589f13e72aacdd9f86f3b44696fd1cd068a Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Make sure to overwrite files when "reset --hard" detects conflicts
When performing a "reset --hard" a checkout is done. The pathes are
checked for potential checkout conflicts. But in the end for all
remaining conflicts these files are simply deleted from the working
tree. That's not the right strategy to handle checkout conflicts during
"reset --hard". Instead for every conflict we should simply checkout the
merge commit's content.
This is different from native gits behavior which reports errors when
during a "checkout --hard" a file shows up where a folder was expected.
"warning: unable to unlink d/c.txt: Not a directory"
Why it is like that in native git was asked in
http://permalink.gmane.org/gmane.comp.version-control.git/279482. Unless
it is explained why native git why this error is reported JGit should
overwrite the files.
Bug: 474842
Change-Id: I08e23822a577aaf22120c5137eb169b6bd08447b Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Nadav Cohen [Mon, 2 May 2016 02:06:39 +0000 (19:06 -0700)]
Allow setting FileMode to executable when applying patches in ApplyCommand
git-apply allows modifying file modes in patched files using either
"new mode" or "new file mode" headers. This patch adds support for
setting files as executables and vice-versa.
Marco Miller [Fri, 6 May 2016 20:19:42 +0000 (16:19 -0400)]
Fix config value get to return last instead of 1st just like git
Before this fix, getting the value of 'key' below used to return
value1. This fix makes it so that value3 gets returned instead,
just like native git's get.
[section]
key = value1
key = value2
key = value3
Change-Id: Iccb24de9b63c3ad8646c909494ca3f8c9ed6e29c Signed-off-by: Marco Miller <marco.miller@ericsson.com> Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Marco Miller [Mon, 9 May 2016 16:36:00 +0000 (12:36 -0400)]
Remove UTF-8 checking duplication in Config lib subclasses
Change-Id: Ib9f0ae8207000a36c5bf1a92fcc2c32efc4c0984 Signed-off-by: Marco Miller <marco.miller@ericsson.com> Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Matthias Sohn [Wed, 4 May 2016 23:13:35 +0000 (01:13 +0200)]
Merge branch 'stable-4.3'
* stable-4.3:
Scan loose ref before packed in case gc about to remove the loose
Fix possible NPEs when reporting transport errors
Fix calling of clean/smudge filters from Checkout,MergeCommands
Fix ApplyCommand when result of patch is an empty file
Change-Id: I0dc76b7a8c87ce8e0386a1b9e0fa92a3aa62abf7 Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Marco Miller [Wed, 20 Apr 2016 21:42:34 +0000 (17:42 -0400)]
Scan loose ref before packed in case gc about to remove the loose
Before this change, jgit used to read packed-refs before scanning
loose refs. That was not a problem if gc didn't run concurrently. When
gc did run concurrently with such refs reading, that order sometimes
broke the latter. This lead to reading an older version of a ref's
tip, which meant "losing" the real tip or commit. The specific
read-Vs-gc concurrency scenario which broke reading that way follows:
1. let ref R be in packed-refs and R' be in loose
2. jgit starts reading packed-refs
3. gc also starts its business around that very time
4. jgit still has the time to read R from packed-refs
5. as gc is not done yet updating packed-refs with R'
6. jgit then starts scanning loose refs (or is about to)
7. gc quickly ends up being done moving loose R' to packed-refs
8. so gc (quickly) removes loose refs
9. -while jgit is scanning loose refs, now gone
10. so jgit assumes no loose to consider => packed-refs winning
11. so jgit wrongfully returns R (from 4.) as the tip, instead of R'.
This fix switches the order so loose refs are scanned (secured) before
taking the time to read packed-refs. This way, knowledge of the
likelier tip is guaranteed for ref reading to return the true tip
- despite concurrent gc. If there is no loose ref to scan, jgit reads
packed-refs and lands on R' (or S), which it then returns, as
expected. The gerrit issue [1] should be solved by this fix.
Change-Id: Ibd120120a361a3a6ed565f3836afc1db706fbcdd Signed-off-by: Marco Miller <marco.miller@ericsson.com> Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Matthias Sohn [Mon, 4 Apr 2016 09:12:21 +0000 (11:12 +0200)]
Prepare Neon target platform
also use the Neon target platform as the default target platform.
Neon Eclipse platform requires BREE 8 so we have to use Java 8 at least
for the JGit packaging build (for the compiler settings we still stick
to source and target 1.7 since we want to still support Java 7)
otherwise unpacking platform pack200 archives will fail since they are
built using Java 8 and hence cannot be unpacked using Java 7's
unpack200.
Update org.junit from 4.11 to 4.11 and org.apache.ant from from 1.9.2 to
1.9.6 since the older versions are not available in Neon orbit version
Ignore a couple of tests in ResourceUtilTest which now fail [1] since
bug 476585 was fixed in Neon M6.
CQ: 10694
CQ: 11308
Change-Id: I1a99a3ac2148693e21c57df5aeb848035b52b97b Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Dave Borowitz [Fri, 29 Apr 2016 15:10:36 +0000 (11:10 -0400)]
PersonIdent: Strip some special chars from external strings
The special characters <> and '\n' interfere with parsing of
identities. C git strips these special characters, so we should too.
Rather than allocating extra strings by calling String#trim(), add a
few lines to our sanitization method to perform the same trimming as
described in String's Javadoc.
Dave Borowitz [Fri, 29 Apr 2016 14:47:17 +0000 (10:47 -0400)]
PersonIdent: Document that name and email aren't trimmed
This might be somewhat surprising behavior to users who might
naturally assume the following invariant:
ident.equals(parseIdent(ident.toExternalString()))
This invariant does not hold since whitespace is only trimmed during
serialization. We don't want to mess with the strings during
initialization, as this is called during the highly-optimized commit
parsing codepath.
Dave Borowitz [Mon, 25 Apr 2016 17:36:46 +0000 (13:36 -0400)]
Expose the ObjectInserter that created an ObjectReader
We've found in Gerrit Code Review that it is common to pass around
both an ObjectReader (or more commonly a RevWalk wrapping one) and an
ObjectInserter. These code paths often assume that the ObjectReader
can read back any objects created by the ObjectInserter without
flushing. However, we previously had no way to enforce that constraint
programmatically, leading to hard-to-spot problems.
Provide a solution by exposing the ObjectInserter that created an
ObjectReader, when known. Callers can either continue passing both
objects and check:
reader.getCreatedFromInserter() == inserter
or they can just pass around ObjectReader and extract the inserter
when it's needed (checking that it's not null at usage time).
To align with the version used in Gerrit's master build.
Change-Id: I3b6e21bf367ad1fb3598dc06b968aee6187d5aed Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com> Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
Dave Borowitz [Tue, 19 Apr 2016 13:24:18 +0000 (09:24 -0400)]
Support per-BatchRefUpdate atomic transactions
Repurpose RefDatabase#performsAtomicTransactions() slightly, to
indicate that the backend _supports_ atomic transactions, rather than
the current definition, which is that the backend always _uses_ atomic
transactions regardless of whether or not the caller actually wants
them. Allow BatchRefUpdate callers to turn off atomic transactions by
calling setAtomic(false). Defaulting to true means this is backwards
compatible.
Jon Schneider [Fri, 15 Apr 2016 21:37:32 +0000 (14:37 -0700)]
Fix ApplyCommand when result of patch is an empty file
Such hunks are identifiable by a zero value for "new start line". Prior
to the fix, JGit throws and ArrayIndexOutOfBoundsException on such
patches.
Change-Id: I4f3deb5e5f41a08af965fcc178d678c77270cddb Signed-off-by: Jonathan Schneider <jkschneider@gmail.com> Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Mike Edgar [Wed, 13 Apr 2016 02:23:08 +0000 (22:23 -0400)]
Make UploadPack observe exceptions reading refs
Now if refs are unreadable when serving an upload pack the handler
will fail due to the actual underlying failure. Previously all wants
would be rejected as invalid because Repository.getAllRefs() returned
an empty map.
Testing this required a new subclass of InMemoryRepository so that
an IOException could be injected at the correct time.
Signed-off-by: Michael Edgar <adgar@google.com>
Change-Id: Iac708b1db9d0ccce08c4ef5ace599ea0b57afdc0
Ned Twigg [Sat, 28 Jun 2014 03:22:03 +0000 (20:22 -0700)]
Expose conflicting files in CheckoutConflictException
Change-Id: I5b3b7b0633354d5ccf0c6c320c0df9c93fdf8eeb Signed-off-by: Ned Twigg <ned.twigg@diffplug.com> Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Fix CommitCommand to be able to skip writing to RefLog
CommitCommand already provided a method to set the comment which should
be written into the reflog. The underlying RefUpdate class supported to
skip writing a reflog entry. But through the CommitCommand API it was
not possible to prevent writing a reflog entry. Fix this and allow
creating commits which don't occur in the reflog.
Terry Parker [Thu, 7 Apr 2016 23:24:10 +0000 (16:24 -0700)]
Filter corrupt objects from DfsReader.selectObjectRepresentation()
PackWriter.writeObject() can get into an infinite loop when corrupt
packs are present. When it finds a pack file with an object that can be
reused it calls DfsPackFile.copyAsIs(). If that method sees an invalid
CRC, it adds the object to the DfsPackFile's corrupt object list and
throws a CorruptObjectException, which it later catches as an
IOException and wraps in a
StoredObjectRepresentationNotAvailableException.
PackWriter.writeObjectImpl() catches that SORNAE and retries the
operation by calling DfsReader.selectObjectRepresentation(). But
currently that method returns the same object which was just seen to
be corrupt.
Change DfsPackFile.isCorrupt() from private to package private, and use
that method in DfsReader.selectObjectRepresentation() to filter out
corrupt objects.
The stack traces that show the problem are:
org.eclipse.jgit.errors.CorruptObjectException.<init>(CorruptObjectException.java:113)
org.eclipse.jgit.internal.storage.dfs.DfsPackFile.copyAsIs(DfsPackFile.java:624)
org.eclipse.jgit.internal.storage.dfs.DfsReader.copyObjectAsIs(DfsReader.java:491)
org.eclipse.jgit.internal.storage.pack.PackWriter.writeObjectImpl(PackWriter.java:1478)
org.eclipse.jgit.internal.storage.pack.PackWriter.writeObject(PackWriter.java:1455)
Hugo Arès [Fri, 18 Sep 2015 18:05:23 +0000 (14:05 -0400)]
Remove repository from cache when it's closed
RepositoryCache has 2 methods to remove a repository from the cache but
they are never called when a repository is closed. Users of the cache
were expected to call one of those 2 methods but how could they have
called them at proper time without having visibility of the repository
usage count.
Ideally, I would have reworked the RepositoryCache to wrap any
repository it opens in a class that would be responsible to unregister
them from the cache when it's really closed, i.e. when usage counter
reaches 0. The problem preventing the wrapping solution is the
RepositoryCache.register method that allows to register an already
opened repository in the cache. Such repositories cannot be wrapped
because callers are still holding a reference on the unwrapped
repository.
Document that RepositoryCache.close method is removing the repository
from the cache as well as closing it and rework
RepositoryCache.unregister method to only remove the repository from the
cache. Use the latter to unregister repository when Repository.doClose
is getting executed.
Change-Id: Ia364816e4da8d7b6cfa72f10758ca31aa8a1f9db Signed-off-by: Hugo Arès <hugo.ares@ericsson.com> Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Hugo Arès [Tue, 8 Sep 2015 13:21:31 +0000 (09:21 -0400)]
Fix RefDirectory not closing resources
When repositories are opened using the RepositoryCache, they are kept in
memory and when the repository usage counter reaches 0, the
Repository.close method is called which then calls close method on its
reference and object databases.
The problem is that RefDirectory.close method was a no-op and the
reference database was kept in memory. This problem is only happening
when opening a repository using the RepositoryCache because it never
evicts repositories, it's just calling the close method.
Change-Id: Iacb961de8e8b1f5b37824bf0d1a4caf4c6f1233f Signed-off-by: Hugo Arès <hugo.ares@ericsson.com>
Hugo Arès [Fri, 4 Sep 2015 19:32:28 +0000 (15:32 -0400)]
Fix repository cache never closing repository
Repository has a usage counter that is initialized to 1 at
instantiation and this counter is decremented when Repository.close
method is called. There is also a Repository.incrementOpen method that
RepositoryCache uses to increment the usage count when it's returning a
repository that is already opened.
The problem was that RepositoryCache was incrementing the usage count
for repositories that it just opened or registered. The usage count was
2 when it should have been 1.
Incrementing usage count is now only be done for repository that are
served from the cache.
This bug is causing slow memory increase of our Gerrit server until the
server become slow. Even if the RepositoryCache is using SoftReference,
it seems that the JVM is not garbage collecting the repositories because
it's not yet on the edge of being out of memory.
To test this change, I replicated all repositories(11k) from Gerrit
master to one slave. The Gerrit master used memory after this test was
10GB without this change and 3.5GB with.
Change-Id: I86c7b36174e384f106b51fe92f306018fd1dbdf0 Signed-off-by: Hugo Arès <hugo.ares@ericsson.com>
Enable calling of smudge filters when checking out paths
When checking out commits/branches JGit was triggering correctly
configured smudge filters. But when checking out paths (either from
index or from commits) JGit was not triggering smudge filters. Fix
CheckoutCommand to properly call filters.
Add config parameter gc.prunePackExpire for packfile expiration
JGit's Garbage Collector is repacking relevant objects into new
packfiles and is afterwards deleting the now obsolete packfiles. But to
prevent problems caused by race conditions JGit was not deleting
packfiles when they are too young. The same mechanism as for loose
objects and the config parameter gc.pruneExpire was used.
But JGit was reusing the parameter gc.pruneExpire also for packfiles
which may cause a lot of filesystem consumption if gc.pruneExpire was
set to the default of 2 weeks. Only two weeks after packfile creation gc
was allowed to delete this packfile.
This change introduces a new config paramter gc.prunePackExpire with a
default of "1.hour". This parameter is used when packfiles are deleted.
Only packfiles older than the specified time can be deleted.
For loose objects the behaviour is not changed and only the old
parameter gc.pruneExpire is relevant.
projects / jgit.git / log