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Eduard Tudenhoefner commented on CASSANDRA-11615: ------------------------------------------------- It was deadlocked and eventually failed with {code} java.lang.RuntimeException: Timed out waiting for a timer thread - seems one got stuck. Check GC/Heap size at org.apache.cassandra.stress.util.Timing.snap(Timing.java:98) at org.apache.cassandra.stress.StressMetrics.update(StressMetrics.java:156) at org.apache.cassandra.stress.StressMetrics.access$300(StressMetrics.java:37) at org.apache.cassandra.stress.StressMetrics$2.run(StressMetrics.java:104) at java.lang.Thread.run(Thread.java:745) {code} Yeah ok no problem, I can make it an option. > cassandra-stress blocks when connecting to a big cluster > -------------------------------------------------------- > > Key: CASSANDRA-11615 > URL: https://issues.apache.org/jira/browse/CASSANDRA-11615 > Project: Cassandra > Issue Type: Bug > Components: Tools > Reporter: Eduard Tudenhoefner > Assignee: Eduard Tudenhoefner > Fix For: 3.0.x > > Attachments: 11615-3.0.patch > > > I had a *100* node cluster and was running > {code} > cassandra-stress read n=100 no-warmup cl=LOCAL_QUORUM -rate 'threads=20' > 'limit=1000/s' > {code} > Based on the thread dump it looks like it's been blocked at > https://github.com/apache/cassandra/blob/cassandra-3.0/tools/stress/src/org/apache/cassandra/stress/util/JavaDriverClient.java#L96 > {code} > "Thread-20" #245 prio=5 os_prio=0 tid=0x00007f3781822000 nid=0x46c4 waiting > for monitor entry [0x00007f36cc788000] > java.lang.Thread.State: BLOCKED (on object monitor) > at > org.apache.cassandra.stress.util.JavaDriverClient.prepare(JavaDriverClient.java:96) > - waiting to lock <0x00000005c003d920> (a > java.util.concurrent.ConcurrentHashMap) > at > org.apache.cassandra.stress.operations.predefined.CqlOperation$JavaDriverWrapper.createPreparedStatement(CqlOperation.java:314) > at > org.apache.cassandra.stress.operations.predefined.CqlOperation.run(CqlOperation.java:77) > at > org.apache.cassandra.stress.operations.predefined.CqlOperation.run(CqlOperation.java:109) > at > org.apache.cassandra.stress.operations.predefined.CqlOperation.run(CqlOperation.java:261) > at > org.apache.cassandra.stress.StressAction$Consumer.run(StressAction.java:327) > "Thread-19" #244 prio=5 os_prio=0 tid=0x00007f3781820000 nid=0x46c3 waiting > for monitor entry [0x00007f36cc889000] > java.lang.Thread.State: BLOCKED (on object monitor) > at > org.apache.cassandra.stress.util.JavaDriverClient.prepare(JavaDriverClient.java:96) > - waiting to lock <0x00000005c003d920> (a > java.util.concurrent.ConcurrentHashMap) > at > org.apache.cassandra.stress.operations.predefined.CqlOperation$JavaDriverWrapper.createPreparedStatement(CqlOperation.java:314) > at > org.apache.cassandra.stress.operations.predefined.CqlOperation.run(CqlOperation.java:77) > at > org.apache.cassandra.stress.operations.predefined.CqlOperation.run(CqlOperation.java:109) > at > org.apache.cassandra.stress.operations.predefined.CqlOperation.run(CqlOperation.java:261) > at > org.apache.cassandra.stress.StressAction$Consumer.run(StressAction.java:327) > {code} > I was trying the same with with a smaller cluster (50 nodes) and it was > working fine. -- This message was sent by Atlassian JIRA (v6.3.4#6332)