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From "zhaoyan (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-13235) All thread blocked and writes pending.
Date Fri, 17 Feb 2017 08:02:41 GMT
zhaoyan created CASSANDRA-13235:
-----------------------------------

             Summary: 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

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

And I found there are many blocked thread with jstack

"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)

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




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