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Robbie Strickland updated CASSANDRA-9938: ----------------------------------------- Attachment: gc_log.txt > Significant GC pauses > --------------------- > > Key: CASSANDRA-9938 > URL: https://issues.apache.org/jira/browse/CASSANDRA-9938 > Project: Cassandra > Issue Type: Bug > Components: Core > Environment: Ubuntu 14.04, Java 1.8.0u45 > Reporter: Robbie Strickland > Labels: gc > Attachments: gc_log.txt > > > We have an 18-node analytics cluster, running 2.1.7 patched with > CASSANDRA-9662. On a couple of the nodes we are seeing very long GC pauses, > especially in old gen. Eventually these nodes OOM: > {code} > ERROR [SharedPool-Worker-167] 2015-07-30 00:36:20,746 > JVMStabilityInspector.java:94 - JVM state determined to be unstable. Exiting > forcefully due to: java.lang.OutOfMemoryError: Java heap space > {code} > We use G1 with the following settings: > Max heap = 16G > New size = 1.6G > +UseTLAB > +ResizeTLAB > +PerfDisableSharedMem > -UseBiasedLocking > The nodes in question have average load profiles for the cluster, and caches > are disabled on all tables. There is no obvious difference with the > problematic nodes. Unfortunately we're currently getting an assertion error > when trying to get a heap dump, or I would post that. -- This message was sent by Atlassian JIRA (v6.3.4#6332)