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https://issues.apache.org/jira/browse/CASSANDRA-12728?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15610825#comment-15610825
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Nate McCall commented on CASSANDRA-12728:
-----------------------------------------
[~garvitjuniwal] Thank you for the patch, but we should not swallow the
exception and continue. Doing so would not inform the operator that they are
potentially missing data.
Further, I'm not sure we *want* to continue in this case and it looks to me
that HintsDispatchExecutor is doing the right thing. In other words, I would
prefer we error out and let the operator make the decision about wether they
should delete the specific file and then try again.
That said, it looks like we do have an issue with the log message:
{noformat}
HintsDispatchExecutor.java:225 - Failed to dispatch hints file
49c3290a-fafd-456c-966e-8bcd1eab9af8-1477371781565-1.hints: file is corrupted
({})
{noformat}
The second log parameter which should be the file path is not filled in because
the wrong logger invocation is used. A patch for that would be awesome!
> Handling partially written hint files
> -------------------------------------
>
> Key: CASSANDRA-12728
> URL: https://issues.apache.org/jira/browse/CASSANDRA-12728
> Project: Cassandra
> Issue Type: Bug
> Reporter: Sharvanath Pathak
> Assignee: Aleksey Yeschenko
> Labels: lhf
> Attachments: CASSANDRA-12728.patch
>
>
> {noformat}
> ERROR [HintsDispatcher:1] 2016-09-28 17:44:43,397
> HintsDispatchExecutor.java:225 - Failed to dispatch hints file
> d5d7257c-9f81-49b2-8633-6f9bda6e3dea-1474892654160-1.hints: file is corrupted
> ({})
> org.apache.cassandra.io.FSReadError: java.io.EOFException
> at
> org.apache.cassandra.hints.HintsReader$BuffersIterator.computeNext(HintsReader.java:282)
> ~[apache-cassandra-3.0.6.jar:3.0.6]
> at
> org.apache.cassandra.hints.HintsReader$BuffersIterator.computeNext(HintsReader.java:252)
> ~[apache-cassandra-3.0.6.jar:3.0.6]
> at
> org.apache.cassandra.utils.AbstractIterator.hasNext(AbstractIterator.java:47)
> ~[apache-cassandra-3.0.6.jar:3.0.6]
> at
> org.apache.cassandra.hints.HintsDispatcher.sendHints(HintsDispatcher.java:156)
> ~[apache-cassandra-3.0.6.jar:3.0.6]
> at
> org.apache.cassandra.hints.HintsDispatcher.sendHintsAndAwait(HintsDispatcher.java:137)
> ~[apache-cassandra-3.0.6.jar:3.0.6]
> at
> org.apache.cassandra.hints.HintsDispatcher.dispatch(HintsDispatcher.java:119)
> ~[apache-cassandra-3.0.6.jar:3.0.6]
> at
> org.apache.cassandra.hints.HintsDispatcher.dispatch(HintsDispatcher.java:91)
> ~[apache-cassandra-3.0.6.jar:3.0.6]
> at
> org.apache.cassandra.hints.HintsDispatchExecutor$DispatchHintsTask.deliver(HintsDispatchExecutor.java:259)
> [apache-cassandra-3.0.6.jar:3.0.6]
> at
> org.apache.cassandra.hints.HintsDispatchExecutor$DispatchHintsTask.dispatch(HintsDispatchExecutor.java:242)
> [apache-cassandra-3.0.6.jar:3.0.6]
> at
> org.apache.cassandra.hints.HintsDispatchExecutor$DispatchHintsTask.dispatch(HintsDispatchExecutor.java:220)
> [apache-cassandra-3.0.6.jar:3.0.6]
> at
> org.apache.cassandra.hints.HintsDispatchExecutor$DispatchHintsTask.run(HintsDispatchExecutor.java:199)
> [apache-cassandra-3.0.6.jar:3.0.6]
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> [na:1.8.0_77]
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> [na:1.8.0_77]
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> [na:1.8.0_77]
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> [na:1.8.0_77]
> at java.lang.Thread.run(Thread.java:745) [na:1.8.0_77]
> Caused by: java.io.EOFException: null
> at
> org.apache.cassandra.io.util.RebufferingInputStream.readFully(RebufferingInputStream.java:68)
> ~[apache-cassandra-3.0.6.jar:3.0.6]
> at
> org.apache.cassandra.io.util.RebufferingInputStream.readFully(RebufferingInputStream.java:60)
> ~[apache-cassandra-3.0.6.jar:3.0.6]
> at
> org.apache.cassandra.hints.ChecksummedDataInput.readFully(ChecksummedDataInput.java:126)
> ~[apache-cassandra-3.0.6.jar:3.0.6]
> at
> org.apache.cassandra.utils.ByteBufferUtil.read(ByteBufferUtil.java:402)
> ~[apache-cassandra-3.0.6.jar:3.0.6]
> at
> org.apache.cassandra.hints.HintsReader$BuffersIterator.readBuffer(HintsReader.java:310)
> ~[apache-cassandra-3.0.6.jar:3.0.6]
> at
> org.apache.cassandra.hints.HintsReader$BuffersIterator.computeNextInternal(HintsReader.java:301)
> ~[apache-cassandra-3.0.6.jar:3.0.6]
> at
> org.apache.cassandra.hints.HintsReader$BuffersIterator.computeNext(HintsReader.java:278)
> ~[apache-cassandra-3.0.6.jar:3.0.6]
> ... 15 common frames omitted
> {noformat}
> We've found out that the hint file was truncated because there was a hard
> reboot around the time of last write to the file. I think we basically need
> to handle partially written hint files. Also, the CRC file does not exist in
> this case (probably because it crashed while writing the hints file). May be
> ignoring and cleaning up such partially written hint files can be a way to
> fix this?
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