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* stable-5.10:
Prepare 5.1.17-SNAPSHOT builds
JGit v5.1.16.202106041830-r
BatchRefUpdate: Skip saving conflicting ref names and prefixes in memory
BatchRefUpdateTest: Accurately assert RefsChangedEvent(s) fired
Optimize RefDirectory.isNameConflicting()
Update bazlets and bazel version
Change-Id: I50dcc037a96f3a4237c09516c82e1c18acbd2e0b
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* stable-5.9:
Prepare 5.1.17-SNAPSHOT builds
JGit v5.1.16.202106041830-r
BatchRefUpdate: Skip saving conflicting ref names and prefixes in memory
BatchRefUpdateTest: Accurately assert RefsChangedEvent(s) fired
Optimize RefDirectory.isNameConflicting()
Update bazlets and bazel version
Change-Id: Ib1299564a4cfb9c01f422d7ada05fcfac29700f8
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* stable-5.8:
Prepare 5.1.17-SNAPSHOT builds
JGit v5.1.16.202106041830-r
BatchRefUpdate: Skip saving conflicting ref names and prefixes in memory
BatchRefUpdateTest: Accurately assert RefsChangedEvent(s) fired
Optimize RefDirectory.isNameConflicting()
Update bazlets and bazel version
Change-Id: I9abf7dd8b8e5eb3199fd6b43a4653c4e4cf4bf1b
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* stable-5.7:
Prepare 5.1.17-SNAPSHOT builds
JGit v5.1.16.202106041830-r
BatchRefUpdate: Skip saving conflicting ref names and prefixes in memory
BatchRefUpdateTest: Accurately assert RefsChangedEvent(s) fired
Optimize RefDirectory.isNameConflicting()
Update bazlets and bazel version
Change-Id: I1ee0d01c14fb7dca151b4e7ae1b989da5a3a01e3
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* stable-5.6:
Prepare 5.1.17-SNAPSHOT builds
JGit v5.1.16.202106041830-r
BatchRefUpdate: Skip saving conflicting ref names and prefixes in memory
BatchRefUpdateTest: Accurately assert RefsChangedEvent(s) fired
Optimize RefDirectory.isNameConflicting()
Update bazlets and bazel version
Change-Id: I4570cce185877cb4c50eee519a1cf9467a766dea
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* stable-5.5:
Prepare 5.1.17-SNAPSHOT builds
JGit v5.1.16.202106041830-r
BatchRefUpdate: Skip saving conflicting ref names and prefixes in
memory
BatchRefUpdateTest: Accurately assert RefsChangedEvent(s) fired
Optimize RefDirectory.isNameConflicting()
Update bazlets and bazel version
Change-Id: I504483a4dc979c5e7af18bad45dc18675e32afd2
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* stable-5.4:
Prepare 5.1.17-SNAPSHOT builds
JGit v5.1.16.202106041830-r
BatchRefUpdate: Skip saving conflicting ref names and prefixes in memory
BatchRefUpdateTest: Accurately assert RefsChangedEvent(s) fired
Optimize RefDirectory.isNameConflicting()
Update bazlets and bazel version
Change-Id: If5232b68d3e25df7b71e417cbcbb39476e925f22
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* stable-5.3:
Prepare 5.1.17-SNAPSHOT builds
JGit v5.1.16.202106041830-r
BatchRefUpdate: Skip saving conflicting ref names and prefixes in memory
BatchRefUpdateTest: Accurately assert RefsChangedEvent(s) fired
Optimize RefDirectory.isNameConflicting()
Update bazlets and bazel version
Change-Id: I1338fc79a7be6b77fb28df511dd7504fb19b6d1a
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* stable-5.2:
Prepare 5.1.17-SNAPSHOT builds
JGit v5.1.16.202106041830-r
BatchRefUpdate: Skip saving conflicting ref names and prefixes in memory
BatchRefUpdateTest: Accurately assert RefsChangedEvent(s) fired
Optimize RefDirectory.isNameConflicting()
Update bazlets and bazel version
Change-Id: I7838f7d237a3598bf55995426d7ba1de146cb6ad
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* stable-5.1:
Prepare 5.1.17-SNAPSHOT builds
JGit v5.1.16.202106041830-r
BatchRefUpdate: Skip saving conflicting ref names and prefixes in memory
BatchRefUpdateTest: Accurately assert RefsChangedEvent(s) fired
Optimize RefDirectory.isNameConflicting()
Update bazlets and bazel version
Change-Id: If1b5a2b380cf155e66bf5d5c6d216f86c919bb37
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Rather than getting all ref names and prefixes and saving them
in memory to perform the check for conflicting names, rely on
RefDirectory.isNameConflicting as it is no longer an expensive
call after it was optimized in Ie994fc.
The old optimization to save ref names and prefixes in memory
was targeted towards making clones faster. With this change,
the clone performance is unaffected when tests were done with
repos containing many(~500k) refs.
Here are few recorded elapsed times for creating 10 branches
using BatchRefUpdate on NFS based repositories with varying
loose refs count. As seen here, this change helps improve the
BatchRefUpdate performance from O(n^2) to O(1).
loose_refs_count with_change without_change
50 241 ms 310 ms
300 263 ms 1502 ms
1k 181 ms 4241 ms
2k 204 ms 6440 ms
9k 158 ms 25930 ms
20k 154 ms 60443 ms
50k 171 ms 135199 ms
110k 157 ms 329450 ms
160k 209 ms 396328 ms
This update improves the Gerrit notedb migration performance
as it uses BatchRefUpdate to write change meta refs similar to
the test performed above.
Change-Id: I853ac6c7feb4b39c3156c01876b38cbd182accfe
Signed-off-by: Kaushik Lingarkar <quic_kaushikl@quicinc.com>
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Avoid having to scan over ALL loose refs to determine if the
name is nested within or is a container of an existing reference.
This can get really expensive if there are too many loose refs.
Instead use exactRef and getRefsByPrefix which scan based on a
prefix.
With a simple shell script(like below) using jgit client to create
1k refs in a new repository on NFS, this change brings down the time
from 12mins to 7mins.
for ref in $(seq 1 1000); do
jgit branch "$ref"
done
Here are few recorded elapsed times to create a new branch on NFS
based repositories with varying loose refs count. As we see here,
this change improves the name conflicting check from O(n^2) to O(1).
loose_refs_count with_change without_change
50 44 ms 164 ms
300 45 ms 1193 ms
1k 38 ms 2610 ms
2k 44 ms 6003 ms
9k 46 ms 27860 ms
20k 45 ms 48591 ms
50k 51 ms 135471 ms
110k 43 ms 294252 ms
160k 52 ms 430976 ms
Change-Id: Ie994fc184b8f82811bfb37b111eb9733dbe3e6e0
Signed-off-by: Kaushik Lingarkar <quic_kaushikl@quicinc.com>
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Change-Id: I50dace6e310016c04f524eb0cfcce0da05fadd47
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This fixes the errorprone warning OperatorPrecedence.
Change-Id: I4c7dafa5ac8e1d58fa15cf91fe1b3cf3f182d536
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This is similar to change Idbc2c29bd that skipped detecting content
renames for large files. With this change, we added a new option in
RenameDetector called "skipContentRenamesForBinaryFiles", that when set,
causes binary files with any slight modification to be identified as
added/deleted. The default for this boolean is false, so preserving
current behaviour.
Change-Id: I4770b1f69c60b1037025ddd0940ba86df6047299
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When the target repository is receiving commits from other sources,
the repo command commit can fail with a LOCK_FAILURE. We could let
callers retry, but then the command needs to redo all the work (opening
all subrepos to recreate the tree).
Retry the commit in LOCK_FAILURE inside the command. The commit
rewrites the whole tree, so it shouldn't have merge errors. Use an
exponential delay with jitter for the retries.
Change-Id: I517b6f2afd16a4b695e6cf471b5d6cf492024ec4
Signed-off-by: Ivan Frade <ifrade@google.com>
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The "branch" field in the .gitmodules is the signal for gerrit to keep
the superproject autoupdated. Tags are immutable and there is no need to
track them, plus the cgit client requires the field to be a "remote
branch name" but not a tag.
Do not set the "branch" field if the revision is a tag. Keep those tags
in another field ("ref") as they help other tools to find the commit in
the destination repository.
We can still have false negatives when a refname is not fully qualified,
but this check covers e.g. the most common case in android.
Note that the javadoc of #setRecordRemoteBranch already mentions that
"submodules that request a tag will not have branch name recorded".
Change-Id: Ib1c321a4d3b7f8d51ca2ea204f72dc0cfed50c37
Signed-off-by: Ivan Frade <ifrade@google.com>
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Add a constant in ConfigConstants, and a ConflictStyle enum in
MergeCommand.
Change-Id: Idf8e036b6b6953bec06d6923a39e5ff30c2da562
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
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Check the last line of the last hunk of a file, not the last line of
the whole patch.
Note that C git only checks that this line starts with "\ " and is at
least 12 characters long because of possible different texts when non-
English messages are used.
Change-Id: I0db81699eb3e99ed7b536a3e2b8dc97df1f58a89
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
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C git treats completely empty lines as empty context lines (which
traditionally have a single blank). Apparently newer GNU diff may
produce such lines; see [1]. ("Newer" meaning "since 2006"...)
[1] https://github.com/git/git/commit/b507b465f7831
Change-Id: I80c1f030edb17a46289b1dabf11a2648d2660d38
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
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Instead of converting the patch bytes to strings apply the patch on
byte level, like C git does. Converting the input lines and the hunk
lines from bytes to strings and then applying the patch based on
strings may give surprising results if a patch converts a text file
from one encoding to another. Moreover, in the end we don't know which
encoding to use to write the result.
Previous code just wrote the result as UTF-8, which forcibly changed
the encoding if the original input had some other encoding (even if the
patch had the same non-UTF-8 encoding). It was also wrong if the input
was UTF-8, and the patch should have changed the encoding to something
else.
So use ByteBuffers instead of Strings. This has the additional advantage
that all these ByteBuffers can share the underlying byte arrays of the
input and of the patch, so it also reduces memory consumption.
Change-Id: I450975f2ba0e7d0bec8973e3113cc2e7aea187ee
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
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Implement applying binary patches. Handles both literal and delta
patches. Note that C git also runs binary files through the clean
and smudge filters. Implement the same safeguards against corrupted
patches as in C git: require the full OIDs to be present in the patch
file, and apply a binary patch only if both pre- and post-image hashes
match.
Add tests for applying literal and delta patches.
Bug: 371725
Change-Id: I71dc214fe4145d7cc8e4769384fb78c7d0d6c220
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
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Add a new BinaryDeltaInputStream that applies a delta provided by
another InputStream to a given base. Because delta application needs
random access to the base, the base itself cannot be yet another
InputStream. But at least this enables streaming of the result.
Add a simple test using delta hunks generated by C git.
Bug: 371725
Change-Id: Ibd26fa2f49860737ad5c5387f7f4870d3e85e628
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
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Add streams that can encode or decode git binary patch data on the fly.
Git writes binary patches base-85 encoded, at most 52 un-encoded bytes,
with the unencoded data length prefixed in a one-character encoding, and
suffixed with a newline character.
Add a test for both the new input and the output stream. The test
roundtrips binary data of different lengths in different ways.
Bug: 371725
Change-Id: Ic3faebaa4637520f5448b3d1acd78d5aaab3907a
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
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Add an implementation for base-85 encoding and decoding [1]. Git binary
patches use this format.
Base-85 encoding assembles bytes as 32-bit MSB values, then converts
these values to base-85 numbers (always 5 bytes) encoded as printable
ASCII characters. Decoding base-85 is the reverse operation. Note
that decoding may overflow on invalid input as 85^5 > 2^32. Encodings
always have a length that is a multiple of 5. If input length is not
divisible by 4, padding bytes are (logically) added, which are ignored
when decoding. The encoding for n bytes has thus always exactly length
(n + 3) / 4 * 5 in integer arithmetic (truncating division).
Includes tests.
[1] https://datatracker.ietf.org/doc/html/rfc1924
Bug: 371725
Change-Id: Ib5b9a503cd62cf70e080a4fb38c8cd1eeeaebcfe
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
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Applying a patch on Windows failed if the patch had the (normal)
single-LF line endings, but the file on disk had the usual Windows
CR-LF line endings.
Git (and JGit) compute diffs on the git-internal blob, i.e., after
CR-LF transformation and clean filtering. Applying patches to files
directly is thus incorrect and may fail if CR-LF settings don't
match, or if clean/smudge filtering is involved.
Change ApplyCommand to run the file content through the check-in
filters before applying the patch, and run the result through the
check-out filters. This makes patch application succeed even if the
patch has single-LFs, but the file has CR-LF and core.autocrlf is
true.
Add tests for various combinations of line endings in the file and in
the patch, and a test to verify the clean/smudge handling.
See also [1].
Running the file though clean/smudge may give strange results with
LFS-managed files. JGit's DiffFormatter has some extra code and
applies the smudge filter again after having run the file through
the check-in filters (CR-LF and clean). So JGit can actually produce
a diff on LFS-managed files using the normal diff machinery. (If it
doesn't run out of memory, that is. After all, LFS is intended for
_large_ files.) How such a diff would be applied with either C git
or JGit is entirely unclear; neither has any code for this special
case. Compare also [2].
Note that C git just doesn't know about LFS and always diffs after
the check-in filter chain, so for LFS files, it'll produce a diff
of the LFS pointers.
[1] https://github.com/git/git/commit/c24f3abac
[2] https://github.com/git-lfs/git-lfs/issues/440
Bug: 571585
Change-Id: I8f71ff26313b5773ff1da612b0938ad2f18751f5
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
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Use Character.isWhitespace() instead of Character.isSpaceChar() to
treat TABs as whitespace, too.
Change-Id: Iffc59c13357d981ede6a1e0feb6ea6ff03fb3064
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
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Negated patterns were handled wrongly. According to the OpenBSD
ssh_config man page,[1] a negated pattern never matches. Negated
patterns make only sense if there are positive patterns; the
negated pattern then can define exceptions for the positive
patterns.
OpenSshConfigFile did this wrongly. It handled "!foo" as "matching
everything but foo", but actually the semantics is "if the input is
"foo", this entry doesn't apply. If the input is anything else,
other patterns determine whether the entry may apply.".
[1] https://man.openbsd.org/ssh_config
Change-Id: I50f6e46581b7ece4c949eddf62f4a265573ec29e
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
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This constant was shipped with 5.11.1.
Change-Id: I480dbefab1cccca78cefbc709b79e5405f8bf8cd
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
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* stable-5.12:
Remove texts which were added by mistake in 00386272
Fix formatting which was broken in 00386272
Change-Id: I1c936183e1fa17ea95ada7849a75bc76af275fa3
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* stable-5.11:
Remove texts which were added by mistake in 00386272
Fix formatting which was broken in 00386272
Change-Id: I6184772bdeca1b9ccecf6e400ae15604ab4f5a69
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* stable-5.10:
Remove texts which were added by mistake in 00386272
Fix formatting which was broken in 00386272
Change-Id: I0f1511be5375716d41565e72b271cb956c3e847b
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* stable-5.9:
Remove texts which were added by mistake in 00386272
Fix formatting which was broken in 00386272
Change-Id: Ifa135077d8d07d2317df3b479822e30d87eca950
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* stable-5.8:
Remove texts which were added by mistake in 00386272
Fix formatting which was broken in 00386272
Change-Id: I9ca7a0237f87d1d4bcaba81e709eaa67902f27e5
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* stable-5.7:
Remove texts which were added by mistake in 00386272
Fix formatting which was broken in 00386272
Change-Id: I7ed3f47cb46e6c1bf483702c8925a24e88658e47
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* stable-5.6:
Remove texts which were added by mistake in 00386272
Fix formatting which was broken in 00386272
Change-Id: I45d444b360485564744bf3dfad2c2f5a5e7fcdf6
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Change-Id: Iaed25dac0bc9af8f3fda6138a5f9fe553bff5d39
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
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Change-Id: I10a3e2b117e790f64386a8e9e7663db8e59230d9
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
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* stable-5.12:
LockFile: create OutputStream only when needed
Remove ReftableNumbersNotIncreasingException
Change-Id: I9d85187d00771beef908f1136015d059024f4118
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* stable-5.11:
LockFile: create OutputStream only when needed
Remove ReftableNumbersNotIncreasingException
Change-Id: I7adb5c4fc28e0043a985b5136424f3f756b2f84f
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* stable-5.10:
LockFile: create OutputStream only when needed
Remove ReftableNumbersNotIncreasingException
Change-Id: Id6e0a78caf12c19a01a88d1ddb8a7df2b3590f98
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* stable-5.9:
LockFile: create OutputStream only when needed
Remove ReftableNumbersNotIncreasingException
Fix stamping to produce stable file timestamps
Change-Id: I056382d1d93f3e0a95838bdd1f0be89711c8a722
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* stable-5.8:
LockFile: create OutputStream only when needed
Remove ReftableNumbersNotIncreasingException
Change-Id: I3274c97cf560398c3c4c27d6759500452f315db0
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* stable-5.7:
LockFile: create OutputStream only when needed
Remove ReftableNumbersNotIncreasingException
Change-Id: Ib3f280e0741f87a0ff615d857a5ea39b35527e74
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* stable-5.6:
LockFile: create OutputStream only when needed
Change-Id: I7c0e37d2cee0923662a7e39df5a802a84c017e4f
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Don't create the stream eagerly in lock(); that may cause JGit to
exceed OS or JVM limits on open file descriptors if many locks need
to be created, for instance when creating many refs. Instead create
the output stream only when one really needs to write something.
Bug: 573328
Change-Id: If9441ed40494d46f594a896d34a5c4f56f91ebf4
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
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In a distributed setting, one can have multiple datacenters use
reftables for serving, while the ground truth for the Ref database is
administered centrally. In this setting, replication delays combined
with compaction can cause update-index ranges to overlap.
Such a setting is used at Google, and the JGit code already handles
this correctly (modulo a bugfix that applied in change I8f8215b99a).
Remove the restriction that was applied at FileReftableDatabase.
Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Change-Id: I6f9ed0fbd7fbc5220083ab808b22a909215f13a9
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