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https://issues.apache.org/jira/browse/CASSANDRA-15284?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17764627#comment-17764627
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Josh McKenzie commented on CASSANDRA-15284:
-------------------------------------------
Probably going to be another week or two before I can come up for air and check
this out.
> AssertionError while scrubbing sstable
> --------------------------------------
>
> Key: CASSANDRA-15284
> URL: https://issues.apache.org/jira/browse/CASSANDRA-15284
> Project: Cassandra
> Issue Type: Bug
> Components: Feature/Compression
> Reporter: Gianluigi Tiesi
> Priority: Normal
> Fix For: 3.11.x, 4.0.x, 4.1.x
>
> Attachments: assert-comp-meta.diff
>
>
> I've got a damaged data file but while trying to run scrub (online or
> offline) I always get this
> error:
>
> {code:java}
> -- StackTrace --
> java.lang.AssertionError
> at
> org.apache.cassandra.io.compress.CompressionMetadata$Chunk.<init>(CompressionMetadata.java:474)
> at
> org.apache.cassandra.io.compress.CompressionMetadata.chunkFor(CompressionMetadata.java:239)
> at
> org.apache.cassandra.io.util.MmappedRegions.updateState(MmappedRegions.java:163)
> at
> org.apache.cassandra.io.util.MmappedRegions.<init>(MmappedRegions.java:73)
> at
> org.apache.cassandra.io.util.MmappedRegions.<init>(MmappedRegions.java:61)
> at
> org.apache.cassandra.io.util.MmappedRegions.map(MmappedRegions.java:104)
> at
> org.apache.cassandra.io.util.FileHandle$Builder.complete(FileHandle.java:362)
> at
> org.apache.cassandra.io.util.FileHandle$Builder.complete(FileHandle.java:331)
> at
> org.apache.cassandra.io.sstable.format.big.BigTableWriter.openFinal(BigTableWriter.java:336)
> at
> org.apache.cassandra.io.sstable.format.big.BigTableWriter.openFinalEarly(BigTableWriter.java:318)
> at
> org.apache.cassandra.io.sstable.SSTableRewriter.switchWriter(SSTableRewriter.java:322)
> at
> org.apache.cassandra.io.sstable.SSTableRewriter.doPrepare(SSTableRewriter.java:370)
> at
> org.apache.cassandra.utils.concurrent.Transactional$AbstractTransactional.prepareToCommit(Transactional.java:173)
> at
> org.apache.cassandra.utils.concurrent.Transactional$AbstractTransactional.finish(Transactional.java:184)
> at
> org.apache.cassandra.io.sstable.SSTableRewriter.finish(SSTableRewriter.java:357)
> at
> org.apache.cassandra.db.compaction.Scrubber.scrub(Scrubber.java:291)
> at
> org.apache.cassandra.db.compaction.CompactionManager.scrubOne(CompactionManager.java:1010)
> at
> org.apache.cassandra.db.compaction.CompactionManager.access$200(CompactionManager.java:83)
> at
> org.apache.cassandra.db.compaction.CompactionManager$3.execute(CompactionManager.java:391)
> at
> org.apache.cassandra.db.compaction.CompactionManager$2.call(CompactionManager.java:312)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at
> org.apache.cassandra.concurrent.NamedThreadFactory.lambda$threadLocalDeallocator$0(NamedThreadFactory.java:81)
> at java.lang.Thread.run(Thread.java:748)
> {code}
> At the moment I've moved away the corrupted file, If you need more info fell
> free to ask
>
> According to the source
> [https://github.com/apache/cassandra/blob/cassandra-3.11/src/java/org/apache/cassandra/io/compress/CompressionMetadata.java#L474]
> looks like the requested chung length is <= 0
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