Can you open a JIRA? https://issues.apache.org/jira/projects/CASSANDRA/issues
On Tue, Jun 23, 2020 at 11:56 AM John Doe <john....@discofan.com> wrote: > We are running apache-cassandra-3.11.4, 10 node cluster with -Xms32G > -Xmx32G -Xmn8G using CMS. > after running couple of days one of the node become unresponsive and > threaddump (jstack -F) shows deadlock. > > Found one Java-level deadlock: > ============================= > > "Native-Transport-Requests-144": > waiting to lock Monitor@0x00007cd5142e4d08 (Object@0x00007f6e00348268, > a java/io/ExpiringCache), > which is held by "CompactionExecutor:115134" > "CompactionExecutor:115134": > waiting to lock Monitor@0x00007f6bcaf130f8 (Object@0x00007f6dff31faa0, > a ch/qos/logback/core/joran/spi/ConfigurationWatchList), > which is held by "Native-Transport-Requests-144" > > Found a total of 1 deadlock. > > I have seen this couple of time now with different nodes with following in > system.log > > IndexSummaryRedistribution.java:77 - Redistributing index summaries > NoSpamLogger.java:91 - Maximum memory usage reached (536870912), cannot > allocate chunk of 1048576 > > also lookin in gc log there has not been a ParNew collection for last > 10hrs, only CMS collections. > > 1739842.375: [GC (CMS Final Remark) [YG occupancy: 2712269 K (7549760 K)] > 1739842.375: [Rescan (parallel) , 0.0614157 secs] > 1739842.437: [weak refs processing, 0.0000994 secs] > 1739842.437: [class unloading, 0.0231076 secs] > 1739842.460: [scrub symbol table, 0.0061049 secs] > 1739842.466: [scrub string table, 0.0043847 secs][1 CMS-remark: > 17696837K(25165824K)] 20409107K(32715584K), 0.0953750 secs] [Times: > user=2.95 sys=0.00, real=0.09 secs] > 1739842.471: [CMS-concurrent-sweep-start] > 1739848.572: [CMS-concurrent-sweep: 6.101/6.101 secs] [Times: user=6.13 > sys=0.00, real=6.10 secs] > 1739848.573: [CMS-concurrent-reset-start] > 1739848.645: [CMS-concurrent-reset: 0.072/0.072 secs] [Times: user=0.08 > sys=0.00, real=0.08 secs] > 1739858.653: [GC (CMS Initial Mark) [1 CMS-initial-mark: > 17696837K(25165824K)] 20409111K(32715584K), 0.0584838 secs] [Times: > user=2.68 sys=0.00, real=0.06 secs] > 1739858.713: [CMS-concurrent-mark-start] > 1739860.496: [CMS-concurrent-mark: 1.784/1.784 secs] [Times: user=84.77 > sys=0.00, real=1.79 secs] > 1739860.497: [CMS-concurrent-preclean-start] > 1739860.566: [CMS-concurrent-preclean: 0.070/0.070 secs] [Times: user=0.07 > sys=0.00, real=0.07 secs] > 1739860.567: [CMS-concurrent-abortable-preclean-start] > CMS: abort preclean due to time > 1739866.333: [CMS-concurrent-abortable-preclean: 5.766/5.766 secs] [Times: > user=5.80 sys=0.00, real=5.76 secs] > > Java HotSpot(TM) 64-Bit Server VM (25.162-b12) for linux-amd64 JRE > (1.8.0_162-b12) > Memory: 4k page, physical 792290076k(2780032k free), swap > 16777212k(16693756k free) > > CommandLine flags: > -XX:+AlwaysPreTouch > -XX:CICompilerCount=15 > -XX:+CMSClassUnloadingEnabled > -XX:+CMSEdenChunksRecordAlways > -XX:CMSInitiatingOccupancyFraction=40 > -XX:+CMSParallelInitialMarkEnabled > -XX:+CMSParallelRemarkEnabled > -XX:CMSWaitDuration=10000 > -XX:ConcGCThreads=50 > -XX:+CrashOnOutOfMemoryError > -XX:GCLogFileSize=10485760 > -XX:+HeapDumpOnOutOfMemoryError > -XX:InitialHeapSize=34359738368 > -XX:InitialTenuringThreshold=1 > -XX:+ManagementServer > -XX:MaxHeapSize=34359738368 > -XX:MaxNewSize=8589934592 > -XX:MaxTenuringThreshold=1 > -XX:MinHeapDeltaBytes=196608 > -XX:NewSize=8589934592 > -XX:NumberOfGCLogFiles=10 > -XX:OldPLABSize=16 > -XX:OldSize=25769803776 > -XX:OnOutOfMemoryError=kill -9 %p > -XX:ParallelGCThreads=50 > -XX:+PerfDisableSharedMem > -XX:+PrintGC > -XX:+PrintGCDetails > -XX:+PrintGCTimeStamps > -XX:+ResizeTLAB > -XX:StringTableSize=1000003 > -XX:SurvivorRatio=8 > -XX:ThreadPriorityPolicy=42 > -XX:ThreadStackSize=256 > -XX:-UseBiasedLocking > -XX:+UseCMSInitiatingOccupancyOnly > -XX:+UseConcMarkSweepGC > -XX:+UseCondCardMark > -XX:+UseFastUnorderedTimeStamps > -XX:+UseGCLogFileRotation > -XX:+UseNUMA > -XX:+UseNUMAInterleaving > -XX:+UseParNewGC > -XX:+UseTLAB > -XX:+UseThreadPriorities > > --Thanks > > --------------------------------------------------------------------- > To unsubscribe, e-mail: user-unsubscr...@cassandra.apache.org > For additional commands, e-mail: user-h...@cassandra.apache.org > >
