zhaoyan created CASSANDRA-13235:
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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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