[
https://issues.apache.org/jira/browse/CASSANDRA-4492?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Jason Harvey updated CASSANDRA-4492:
------------------------------------
Description:
Running into an issue on a 6 node ring running 1.0.11 where HintsColumnFamily
compactions often hang indefinitely when using multithreaded compaction.
Nothing of note in the logs. In some cases, the compaction hangs before a tmp
sstable is even created.
I've wiped out every hints sstable I and restarted several times. The issue
always comes back rather quickly and predictably. The compactions sometimes
complete if the hint sstables are very small. Disabling multithreaded
compaction stops this issue from occurring.
Compactions of all other CFs seem to work just fine.
This ring was upgraded from 1.0.7. I didn't keep any hints from the upgrade.
Here is the output I see from compactionstats where a compaction has hung. The
'bytes compacted' column never changes.
{code}
pending tasks: 1
compaction type keyspace column family bytes compacted
bytes total progress
Compaction systemHintsColumnFamily 268082
464784758 0.06%
{code}
The hung thread stack is as follows: (full jstack attached, as well)
{code}
"CompactionExecutor:37" daemon prio=10 tid=0x00000000063df800 nid=0x49d9
waiting on condition [0x00007eb8c6ffa000]
java.lang.Thread.State: WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x000000050f2e0e58> (a
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
at java.util.concurrent.locks.LockSupport.park(LockSupport.java:158)
at
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:1987)
at
java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:399)
at
org.apache.cassandra.db.compaction.ParallelCompactionIterable$Deserializer.computeNext(ParallelCompactionIterable.java:329)
at
org.apache.cassandra.db.compaction.ParallelCompactionIterable$Deserializer.computeNext(ParallelCompactionIterable.java:281)
at
com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:140)
at
com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:135)
at
org.apache.cassandra.utils.MergeIterator$Candidate.advance(MergeIterator.java:147)
at
org.apache.cassandra.utils.MergeIterator$ManyToOne.advance(MergeIterator.java:126)
at
org.apache.cassandra.utils.MergeIterator$ManyToOne.computeNext(MergeIterator.java:100)
at
com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:140)
at
com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:135)
at
org.apache.cassandra.db.compaction.ParallelCompactionIterable$Unwrapper.computeNext(ParallelCompactionIterable.java:101)
at
org.apache.cassandra.db.compaction.ParallelCompactionIterable$Unwrapper.computeNext(ParallelCompactionIterable.java:88)
at
com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:140)
at
com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:135)
at com.google.common.collect.Iterators$7.computeNext(Iterators.java:614)
at
com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:140)
at
com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:135)
at
org.apache.cassandra.db.compaction.CompactionTask.execute(CompactionTask.java:141)
at
org.apache.cassandra.db.compaction.CompactionManager$7.call(CompactionManager.java:395)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
{code}
was:
Running into an issue on a 6 node ring running 1.0.11 where HintsColumnFamily
compactions often hang indefinitely when using multithreaded compaction.
Nothing of note in the logs. In some cases, the compaction hangs before a tmp
sstable is even created.
I've wiped out every hints sstable I have and restarted several times. The
issue always comes back rather quickly and predictably after wiping the
sstables. The compactions sometimes complete if the hint sstables are very
small. Disabling multithreaded compaction stops this issue from occurring.
Compactions of all other CFs seem to work just fine.
This ring was upgraded from 1.0.7. I didn't keep any hints from the upgrade.
Here is the output I see from compactionstats where a compaction has hung. The
'bytes compacted' column never changes.
{code}
pending tasks: 1
compaction type keyspace column family bytes compacted
bytes total progress
Compaction systemHintsColumnFamily 268082
464784758 0.06%
{code}
The hung thread stack is as follows: (full jstack attached, as well)
{code}
"CompactionExecutor:37" daemon prio=10 tid=0x00000000063df800 nid=0x49d9
waiting on condition [0x00007eb8c6ffa000]
java.lang.Thread.State: WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x000000050f2e0e58> (a
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
at java.util.concurrent.locks.LockSupport.park(LockSupport.java:158)
at
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:1987)
at
java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:399)
at
org.apache.cassandra.db.compaction.ParallelCompactionIterable$Deserializer.computeNext(ParallelCompactionIterable.java:329)
at
org.apache.cassandra.db.compaction.ParallelCompactionIterable$Deserializer.computeNext(ParallelCompactionIterable.java:281)
at
com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:140)
at
com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:135)
at
org.apache.cassandra.utils.MergeIterator$Candidate.advance(MergeIterator.java:147)
at
org.apache.cassandra.utils.MergeIterator$ManyToOne.advance(MergeIterator.java:126)
at
org.apache.cassandra.utils.MergeIterator$ManyToOne.computeNext(MergeIterator.java:100)
at
com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:140)
at
com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:135)
at
org.apache.cassandra.db.compaction.ParallelCompactionIterable$Unwrapper.computeNext(ParallelCompactionIterable.java:101)
at
org.apache.cassandra.db.compaction.ParallelCompactionIterable$Unwrapper.computeNext(ParallelCompactionIterable.java:88)
at
com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:140)
at
com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:135)
at com.google.common.collect.Iterators$7.computeNext(Iterators.java:614)
at
com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:140)
at
com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:135)
at
org.apache.cassandra.db.compaction.CompactionTask.execute(CompactionTask.java:141)
at
org.apache.cassandra.db.compaction.CompactionManager$7.call(CompactionManager.java:395)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
{code}
> HintsColumnFamily compactions hang when using multithreaded compaction
> ----------------------------------------------------------------------
>
> Key: CASSANDRA-4492
> URL: https://issues.apache.org/jira/browse/CASSANDRA-4492
> Project: Cassandra
> Issue Type: Bug
> Affects Versions: 1.0.11
> Reporter: Jason Harvey
> Priority: Minor
> Attachments: jstack.txt
>
>
> Running into an issue on a 6 node ring running 1.0.11 where HintsColumnFamily
> compactions often hang indefinitely when using multithreaded compaction.
> Nothing of note in the logs. In some cases, the compaction hangs before a tmp
> sstable is even created.
> I've wiped out every hints sstable I and restarted several times. The issue
> always comes back rather quickly and predictably. The compactions sometimes
> complete if the hint sstables are very small. Disabling multithreaded
> compaction stops this issue from occurring.
> Compactions of all other CFs seem to work just fine.
> This ring was upgraded from 1.0.7. I didn't keep any hints from the upgrade.
> Here is the output I see from compactionstats where a compaction has hung.
> The 'bytes compacted' column never changes.
> {code}
> pending tasks: 1
> compaction type keyspace column family bytes compacted
> bytes total progress
> Compaction systemHintsColumnFamily 268082
> 464784758 0.06%
> {code}
> The hung thread stack is as follows: (full jstack attached, as well)
> {code}
> "CompactionExecutor:37" daemon prio=10 tid=0x00000000063df800 nid=0x49d9
> waiting on condition [0x00007eb8c6ffa000]
> java.lang.Thread.State: WAITING (parking)
> at sun.misc.Unsafe.park(Native Method)
> - parking to wait for <0x000000050f2e0e58> (a
> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
> at java.util.concurrent.locks.LockSupport.park(LockSupport.java:158)
> at
> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:1987)
> at
> java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:399)
> at
> org.apache.cassandra.db.compaction.ParallelCompactionIterable$Deserializer.computeNext(ParallelCompactionIterable.java:329)
> at
> org.apache.cassandra.db.compaction.ParallelCompactionIterable$Deserializer.computeNext(ParallelCompactionIterable.java:281)
> at
> com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:140)
> at
> com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:135)
> at
> org.apache.cassandra.utils.MergeIterator$Candidate.advance(MergeIterator.java:147)
> at
> org.apache.cassandra.utils.MergeIterator$ManyToOne.advance(MergeIterator.java:126)
> at
> org.apache.cassandra.utils.MergeIterator$ManyToOne.computeNext(MergeIterator.java:100)
> at
> com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:140)
> at
> com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:135)
> at
> org.apache.cassandra.db.compaction.ParallelCompactionIterable$Unwrapper.computeNext(ParallelCompactionIterable.java:101)
> at
> org.apache.cassandra.db.compaction.ParallelCompactionIterable$Unwrapper.computeNext(ParallelCompactionIterable.java:88)
> at
> com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:140)
> at
> com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:135)
> at
> com.google.common.collect.Iterators$7.computeNext(Iterators.java:614)
> at
> com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:140)
> at
> com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:135)
> at
> org.apache.cassandra.db.compaction.CompactionTask.execute(CompactionTask.java:141)
> at
> org.apache.cassandra.db.compaction.CompactionManager$7.call(CompactionManager.java:395)
> at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
> at java.util.concurrent.FutureTask.run(FutureTask.java:138)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> at java.lang.Thread.run(Thread.java:662)
> {code}
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators:
https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira
