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https://issues.apache.org/jira/browse/CASSANDRA-13897?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16210463#comment-16210463
]
Stefania commented on CASSANDRA-13897:
--------------------------------------
Thanks for the explanation [~blambov], it looks like we should continue
rounding to powers of two for the chunk cache.
I've extended the [patch|https://github.com/stef1927/cassandra/tree/13897-3.11]
to either round up or down [~snazy]. This can be configured via a yaml property
that it only documented in config, not in the actual yaml file. This property
is called {{file_cache_round_up}} and by default it will be false when the disk
optimization strategy is ssd, therefore rounding down, and it will be true when
it is set to spinning, therefore rounding up only for spinning disks.
> nodetool compact and flush fail with "error: null"
> --------------------------------------------------
>
> Key: CASSANDRA-13897
> URL: https://issues.apache.org/jira/browse/CASSANDRA-13897
> Project: Cassandra
> Issue Type: Bug
> Components: Compaction
> Environment: * Apache Cassandra 3.11.0
> * Linux 4.4.0-92-generic #115-Ubuntu SMP Thu Aug 10 09:04:33 UTC 2017 x86_64
> x86_64 x86_64 GNU/Linux
> * jdk1.8.0_144
> Reporter: Jacob Rhoden
> Assignee: Stefania
> Priority: Minor
>
> {{nodetool flush}} and {{nodetool compact}} return an error message that is
> not clear. This could probably be improved. Both of my two nodes return this
> error.
> {{nodetool flush}} Will return this error the first 2-3 times you invoke it,
> then the error temporarily disappears. {{nodetool compress}} always returns
> this error message no matter how many times you invoke it.
> I have tried deleting saved_caches, commit logs, doing nodetool
> compact/rebuild/scrub, and nothing seems to remove the error.
> {noformat}
> cass@s5:~/apache-cassandra-3.11.0$ nodetool compact
> error: null
> -- StackTrace --
> java.lang.AssertionError
> at
> org.apache.cassandra.cache.ChunkCache$CachingRebufferer.<init>(ChunkCache.java:222)
> at org.apache.cassandra.cache.ChunkCache.wrap(ChunkCache.java:175)
> at
> org.apache.cassandra.io.util.FileHandle$Builder.maybeCached(FileHandle.java:412)
> at
> org.apache.cassandra.io.util.FileHandle$Builder.complete(FileHandle.java:381)
> at
> org.apache.cassandra.io.util.FileHandle$Builder.complete(FileHandle.java:331)
> at
> org.apache.cassandra.io.sstable.format.big.BigTableWriter.openFinal(BigTableWriter.java:333)
> 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$AbstractTransactional.prepareToCommit(Transactional.java:173)
> at
> org.apache.cassandra.db.compaction.writers.CompactionAwareWriter.doPrepare(CompactionAwareWriter.java:111)
> at
> org.apache.cassandra.utils.concurrent.Transactional$AbstractTransactional.prepareToCommit(Transactional.java:173)
> at
> org.apache.cassandra.utils.concurrent.Transactional$AbstractTransactional.finish(Transactional.java:184)
> at
> org.apache.cassandra.db.compaction.writers.CompactionAwareWriter.finish(CompactionAwareWriter.java:121)
> at
> org.apache.cassandra.db.compaction.CompactionTask.runMayThrow(CompactionTask.java:220)
> at
> org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:28)
> at
> org.apache.cassandra.db.compaction.CompactionTask.executeInternal(CompactionTask.java:85)
> at
> org.apache.cassandra.db.compaction.AbstractCompactionTask.execute(AbstractCompactionTask.java:61)
> at
> org.apache.cassandra.db.compaction.CompactionManager$10.runMayThrow(CompactionManager.java:733)
> at
> org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:28)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$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)
> {noformat}
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