Gerrit error: unpack failed: error Short read of block.

[Willie]

Gerrit version 2.2.1


The full error dump is:

Counting objects: 68, done.
Delta compression using up to 8 threads.
Compressing objects: 100% (36/36), done.
Writing objects: 100% (41/41), 11.19 KiB, done.
Total 41 (delta 14), reused 0 (delta 0)
fatal: Unpack error, check server log
remote: Resolving deltas: 14% (2/14)
error: unpack failed: error Short read of block.
To <remote repo>
! [remote rejected] HEAD -> refs/for/master (n/a (unpacker error))
error: failed to push some refs to '<remote repo>'


I get it when trying to push code using: git push review HEAD:refs/for/
master

After much searching, I have found scantly little on this problem.
I've tried restarting Gerrit, as well as the machine it's running on
with no luck.

Has anyone seen this before?

[Shawn Pearce]

This should have a stack trace on the server side. That might help...

[Willie Williams]

Hi Shawn,

First off, thanks for the super quick reply.

Here's the stack trace:

[2011-09-22 21:51:19,499] ERROR com.google.gerrit.sshd.BaseCommand : Internal server error (user jordan account 1000001) during git-receive-pack '/tools/review'

com.google.gerrit.sshd.BaseCommand$Failure: fatal: Unpack error, check server log

at com.google.gerrit.sshd.commands.Receive.runImpl(Receive.java:135)

at com.google.gerrit.sshd.AbstractGitCommand.service(AbstractGitCommand.java:103)

at com.google.gerrit.sshd.AbstractGitCommand.access$000(AbstractGitCommand.java:34)

at com.google.gerrit.sshd.AbstractGitCommand$1.run(AbstractGitCommand.java:69)

at com.google.gerrit.sshd.BaseCommand$TaskThunk.run(BaseCommand.java:399)

at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)

at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)

at java.util.concurrent.FutureTask.run(FutureTask.java:166)

at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$101(ScheduledThreadPoolExecutor.java:165)

at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:266)

at com.google.gerrit.server.git.WorkQueue$Task.run(WorkQueue.java:324)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)

at java.lang.Thread.run(Thread.java:636)

Caused by: java.io.IOException: Unpack error on project "tools/review":

  RefFilter: com.google.gerrit.server.git.ReceiveCommitsRefFilter@1826b7aclass com.google.gerrit.server.git.ReceiveCommitsRefFilter

at com.google.gerrit.sshd.commands.Receive.runImpl(Receive.java:134)

... 13 more

Caused by: org.eclipse.jgit.errors.UnpackException: Exception while parsing pack stream

at org.eclipse.jgit.transport.ReceivePack.service(ReceivePack.java:702)

at org.eclipse.jgit.transport.ReceivePack.receive(ReceivePack.java:600)

at com.google.gerrit.sshd.commands.Receive.runImpl(Receive.java:90)

... 13 more

Caused by: java.io.EOFException: Short read of block.

at org.eclipse.jgit.util.IO.readFully(IO.java:218)

at org.eclipse.jgit.storage.file.UnpackedObject.open(UnpackedObject.java:108)

at org.eclipse.jgit.storage.file.ObjectDirectory.openObject2(ObjectDirectory.java:537)

at org.eclipse.jgit.storage.file.ObjectDirectory.openObject1(ObjectDirectory.java:428)

at org.eclipse.jgit.storage.file.FileObjectDatabase.openObjectImpl1(FileObjectDatabase.java:172)

at org.eclipse.jgit.storage.file.FileObjectDatabase.openObject(FileObjectDatabase.java:157)

at org.eclipse.jgit.storage.file.WindowCursor.open(WindowCursor.java:122)

at org.eclipse.jgit.lib.ObjectReader.open(ObjectReader.java:228)

at org.eclipse.jgit.revwalk.RevWalk.parseAny(RevWalk.java:811)

at org.eclipse.jgit.transport.ReceivePack.checkConnectivity(ReceivePack.java:871)

at org.eclipse.jgit.transport.ReceivePack.service(ReceivePack.java:666)

... 15 more

[Shawn Pearce]

On Thu, Sep 22, 2011 at 15:38, Willie Williams <bigwill...@gmail.com> wrote:
> First off, thanks for the super quick reply.
> Here's the stack trace:
> [2011-09-22 21:51:19,499] ERROR com.google.gerrit.sshd.BaseCommand :
> Internal server error (user jordan account 1000001) during git-receive-pack
> '/tools/review'

...

> Caused by: java.io.IOException: Unpack error on project "tools/review":

...

> Caused by: java.io.EOFException: Short read of block.
> at org.eclipse.jgit.util.IO.readFully(IO.java:218)
> at
> org.eclipse.jgit.storage.file.UnpackedObject.open(UnpackedObject.java:108)

Have you run `git fsck` in this repository yet? It seems JGit cannot
read a loose object file.

[Willie]

Update:

It looks as though there was a corrupted object in refs/notes/review.
We deleted the folder, and now we can push, but we're not sure how
this might affect Gerrit operation.

On Sep 22, 3:38 pm, Willie Williams <bigwilliest...@gmail.com> wrote:
> Hi Shawn,
>
> First off, thanks for the super quick reply.
>
> Here's the stack trace:
>
> [2011-09-22 21:51:19,499] ERROR com.google.gerrit.sshd.BaseCommand :
> Internal server error (user jordan account 1000001) during git-receive-pack
> '/tools/review'
> com.google.gerrit.sshd.BaseCommand$Failure: fatal: Unpack error, check
> server log
>  at com.google.gerrit.sshd.commands.Receive.runImpl(Receive.java:135)
> at
> com.google.gerrit.sshd.AbstractGitCommand.service(AbstractGitCommand.java:1 03)
>  at

> com.google.gerrit.sshd.AbstractGitCommand.access$000(AbstractGitCommand.jav a:34)

> at
> com.google.gerrit.sshd.AbstractGitCommand$1.run(AbstractGitCommand.java:69)
>  at com.google.gerrit.sshd.BaseCommand$TaskThunk.run(BaseCommand.java:399)
> at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
>  at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
> at java.util.concurrent.FutureTask.run(FutureTask.java:166)
>  at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access $101(ScheduledThreadPoolExecutor.java:165)
> at

> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Sc heduledThreadPoolExecutor.java:266)

>  at com.google.gerrit.server.git.WorkQueue$Task.run(WorkQueue.java:324)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1 110)
>  at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java: 603)
> at java.lang.Thread.run(Thread.java:636)
> Caused by: java.io.IOException: Unpack error on project "tools/review":
>   RefFilter:

> com.google.gerrit.server.git.ReceiveCommitsRefFil...@1826b7aclasscom.google.gerrit.server.git.ReceiveCommitsRefFilter

>
> at com.google.gerrit.sshd.commands.Receive.runImpl(Receive.java:134)
> ... 13 more
> Caused by: org.eclipse.jgit.errors.UnpackException: Exception while parsing
> pack stream
>  at org.eclipse.jgit.transport.ReceivePack.service(ReceivePack.java:702)
> at org.eclipse.jgit.transport.ReceivePack.receive(ReceivePack.java:600)
>  at com.google.gerrit.sshd.commands.Receive.runImpl(Receive.java:90)
> ... 13 more
> Caused by: java.io.EOFException: Short read of block.
>  at org.eclipse.jgit.util.IO.readFully(IO.java:218)
> at
> org.eclipse.jgit.storage.file.UnpackedObject.open(UnpackedObject.java:108)
>  at
> org.eclipse.jgit.storage.file.ObjectDirectory.openObject2(ObjectDirectory.j ava:537)
> at
> org.eclipse.jgit.storage.file.ObjectDirectory.openObject1(ObjectDirectory.j ava:428)
>  at
> org.eclipse.jgit.storage.file.FileObjectDatabase.openObjectImpl1(FileObject Database.java:172)
> at

> org.eclipse.jgit.storage.file.FileObjectDatabase.openObject(FileObjectDatab ase.java:157)

>  at org.eclipse.jgit.storage.file.WindowCursor.open(WindowCursor.java:122)
> at org.eclipse.jgit.lib.ObjectReader.open(ObjectReader.java:228)
>  at org.eclipse.jgit.revwalk.RevWalk.parseAny(RevWalk.java:811)
> at
> org.eclipse.jgit.transport.ReceivePack.checkConnectivity(ReceivePack.java:8 71)
>  at org.eclipse.jgit.transport.ReceivePack.service(ReceivePack.java:666)
> ... 15 more
>
>
>
>
>
>
>
> On Thu, Sep 22, 2011 at 3:12 PM, Shawn Pearce <s...@google.com> wrote:

[Willie]

A couple related questions:

1) Is the data stored in refs/notes/review necessary for Gerrit
operation?

2) Is the data stored in refs/notes/review stored elsewhere (such as
the H2 database)?

[Shawn Pearce]

On Thu, Sep 22, 2011 at 16:39, Willie <bigwill...@gmail.com> wrote:
> A couple related questions:
>
> 1) Is the data stored in refs/notes/review necessary for Gerrit
> operation?

No, its exported to give you a record in Git of what has been submitted.

> 2) Is the data stored in refs/notes/review stored elsewhere (such as
> the H2 database)?

Yes, its a copy of the submitted change data from the H2 database.
There is a program you can run to re-export everything to the
notes/review branch:

http://gerrit-documentation.googlecode.com/svn/Documentation/2.2.0/pgm-ExportReviewNotes.html

[Willie Williams]

Hey Shawn,

Thanks a ton for your help on this.  ExportReviewNotes worked like a charm.