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From "zhaoyan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-13235) All thread blocked and writes pending.
Date Sun, 19 Feb 2017 04:14:44 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-13235?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15873460#comment-15873460
] 

zhaoyan commented on CASSANDRA-13235:
-------------------------------------

383 is BLOCKED. 

only one is running:

{code}
"SharedPool-Worker-27" #415 daemon prio=5 os_prio=0 tid=0x000000000242d800 nid=0x744e runnable
[0x00007fdd8372c000]
   java.lang.Thread.State: RUNNABLE
    at java.util.Arrays.copyOf(Arrays.java:3284)
    at org.apache.cassandra.db.RangeTombstoneList.copy(RangeTombstoneList.java:116)
    at org.apache.cassandra.db.DeletionInfo.copy(DeletionInfo.java:104)
    at org.apache.cassandra.db.AtomicBTreeColumns.addAllWithSizeDelta(AtomicBTreeColumns.java:217)
    at org.apache.cassandra.db.Memtable.put(Memtable.java:210)
    at org.apache.cassandra.db.ColumnFamilyStore.apply(ColumnFamilyStore.java:1244)
    at org.apache.cassandra.db.Keyspace.apply(Keyspace.java:396)
    at org.apache.cassandra.db.Keyspace.apply(Keyspace.java:359)
    at org.apache.cassandra.db.Mutation.apply(Mutation.java:214)
    at org.apache.cassandra.db.MutationVerbHandler.doVerb(MutationVerbHandler.java:54)
    at org.apache.cassandra.net.MessageDeliveryTask.run(MessageDeliveryTask.java:64)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at org.apache.cassandra.concurrent.AbstractTracingAwareExecutorService$FutureTask.run(AbstractTracingAwareExecutorService.java:164)
    at org.apache.cassandra.concurrent.SEPWorker.run(SEPWorker.java:105)
    at java.lang.Thread.run(Thread.java:745)
{code}

> All thread blocked and writes pending.
> --------------------------------------
>
>                 Key: CASSANDRA-13235
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-13235
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>         Environment: jdk8
> cassandra 2.1.15
>            Reporter: zhaoyan
>
> I found cassandra many pending  MutationStage task
> {code}
> NFO  [Service Thread] 2017-02-17 16:00:14,440 StatusLogger.java:51 - Pool Name      
             Active   Pending      Completed   Blocked  All Time Blocked
> INFO  [Service Thread] 2017-02-17 16:00:14,440 StatusLogger.java:66 - MutationStage 
                 384      4553     4294213082         0                 0
> INFO  [Service Thread] 2017-02-17 16:00:14,441 StatusLogger.java:66 - RequestResponseStage
             0         0     2172612382         0                 0
> INFO  [Service Thread] 2017-02-17 16:00:14,441 StatusLogger.java:66 - ReadRepairStage
                  0         0        5378852         0                 0
> INFO  [Service Thread] 2017-02-17 16:00:14,441 StatusLogger.java:66 - CounterMutationStage
             0         0              0         0                 0
> INFO  [Service Thread] 2017-02-17 16:00:14,441 StatusLogger.java:66 - ReadStage     
                   5         0      577242284         0                 0
> INFO  [Service Thread] 2017-02-17 16:00:14,441 StatusLogger.java:66 - MiscStage     
                   0         0              0         0                 0
> INFO  [Service Thread] 2017-02-17 16:00:14,441 StatusLogger.java:66 - HintedHandoff 
                   0         0           1480         0                 0
> INFO  [Service Thread] 2017-02-17 16:00:14,441 StatusLogger.java:66 - GossipStage   
                   0         0        9342250         0                 0
> {code}
> And I found there are many blocked thread with jstack
> {code}
> "SharedPool-Worker-28" #416 daemon prio=5 os_prio=0 tid=0x0000000001fb8000 nid=0x7459
waiting for monitor entry [0x00007fdd83ca0000]
>    java.lang.Thread.State: BLOCKED (on object monitor)
>     at sun.misc.Unsafe.monitorEnter(Native Method)
>     at org.apache.cassandra.utils.concurrent.Locks.monitorEnterUnsafe(Locks.java:46)
>     at org.apache.cassandra.db.AtomicBTreeColumns.addAllWithSizeDelta(AtomicBTreeColumns.java:202)
>     at org.apache.cassandra.db.Memtable.put(Memtable.java:210)
>     at org.apache.cassandra.db.ColumnFamilyStore.apply(ColumnFamilyStore.java:1244)
>     at org.apache.cassandra.db.Keyspace.apply(Keyspace.java:396)
>     at org.apache.cassandra.db.Keyspace.apply(Keyspace.java:359)
>     at org.apache.cassandra.db.Mutation.apply(Mutation.java:214)
>     at org.apache.cassandra.db.MutationVerbHandler.doVerb(MutationVerbHandler.java:54)
>     at org.apache.cassandra.net.MessageDeliveryTask.run(MessageDeliveryTask.java:64)
>     at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
>     at org.apache.cassandra.concurrent.AbstractTracingAwareExecutorService$FutureTask.run(AbstractTracingAwareExecutorService.java:164)
>     at org.apache.cassandra.concurrent.SEPWorker.run(SEPWorker.java:105)
>     at java.lang.Thread.run(Thread.java:745)
> {code}
> To use "grep BLOCKED |wc -l",  get Number is 384 



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