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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 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.
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. 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. Disabling multithreaded compaction stops this issue from occurring.
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 MultiThreadedCompaction
> ---------------------------------------------------------------------
>
> 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 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.
> 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}
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