apache cassandra 3.11.2, 12 узлов, получили эту ошибку в одном узле при запуске очистки nodetool:
ERROR [CompactionExecutor:4996] 2019-04-10 16:09:43,938 CassandraDaemon.java:228 - Exception in thread Thread[CompactionExecutor:4996,1,main]
java.lang.AssertionError: null
at org.apache.cassandra.io.compress.CompressionMetadata$Chunk.<init>(CompressionMetadata.java:474) ~[apache-cassandra-3.11.2.jar:3.11.2]
at org.apache.cassandra.io.compress.CompressionMetadata.chunkFor(CompressionMetadata.java:239) ~[apache-cassandra-3.11.2.jar:3.11.2]
at org.apache.cassandra.io.util.MmappedRegions.updateState(MmappedRegions.java:163) ~[apache-cassandra-3.11.2.jar:3.11.2]
at org.apache.cassandra.io.util.MmappedRegions.<init>(MmappedRegions.java:73) ~[apache-cassandra-3.11.2.jar:3.11.2]
at org.apache.cassandra.io.util.MmappedRegions.<init>(MmappedRegions.java:61) ~[apache-cassandra-3.11.2.jar:3.11.2]
at org.apache.cassandra.io.util.MmappedRegions.map(MmappedRegions.java:104) ~[apache-cassandra-3.11.2.jar:3.11.2]
at org.apache.cassandra.io.util.FileHandle$Builder.complete(FileHandle.java:362) ~[apache-cassandra-3.11.2.jar:3.11.2]
at org.apache.cassandra.io.sstable.format.big.BigTableWriter.openEarly(BigTableWriter.java:290) ~[apache-cassandra-3.11.2.jar:3.11.2]
at org.apache.cassandra.io.sstable.SSTableRewriter.maybeReopenEarly(SSTableRewriter.java:179) ~[apache-cassandra-3.11.2.jar:3.11.2]
at org.apache.cassandra.io.sstable.SSTableRewriter.append(SSTableRewriter.java:134) ~[apache-cassandra-3.11.2.jar:3.11.2]
at org.apache.cassandra.db.compaction.CompactionManager.doCleanupOne(CompactionManager.java:1137) ~[apache-cassandra-3.11.2.jar:3.11.2]
at org.apache.cassandra.db.compaction.CompactionManager.access$400(CompactionManager.java:86) ~[apache-cassandra-3.11.2.jar:3.11.2]
at org.apache.cassandra.db.compaction.CompactionManager$6.execute(CompactionManager.java:475) ~[apache-cassandra-3.11.2.jar:3.11.2]
at org.apache.cassandra.db.compaction.CompactionManager$2.call(CompactionManager.java:322) ~[apache-cassandra-3.11.2.jar:3.11.2]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[na:1.8.0_191]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) ~[na:1.8.0_191]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [na:1.8.0_191]
at org.apache.cassandra.concurrent.NamedThreadFactory.lambda$threadLocalDeallocator$0(NamedThreadFactory.java:81) [apache-cassandra-3.11.2.jar:3.11.2]
at java.lang.Thread.run(Thread.java:748) ~[na:1.8.0_191]
ERROR [Reference-Reaper:1] 2019-04-10 16:10:01,613 Ref.java:224 - LEAK DETECTED: a reference (org.apache.cassandra.utils.concurrent.Ref$State@6bfdb59e) to class org.apache.cassandra.io.util.FileHandle$Cleanup@1698322065:/data/cassandra/data_files/path/mc-135-big-Index.db was not released before the reference was garbage collected
ERROR [Reference-Reaper:1] 2019-04-10 16:10:01,626 Ref.java:224 - LEAK DETECTED: a reference (org.apache.cassandra.utils.concurrent.Ref$State@6105deee) to class org.apache.cassandra.io.util.MmappedRegions$Tidier@604462250:/data/cassandra/data_files/path/mc-135-big-Data.db was not released before the reference was garbage collected
ERROR [Reference-Reaper:1] 2019-04-10 16:10:01,626 Ref.java:224 - LEAK DETECTED: a reference (org.apache.cassandra.utils.concurrent.Ref$State@22504cf1) to class org.apache.cassandra.utils.concurrent.WrappedSharedCloseable$Tidy@359209204:[Memory@[0..44), Memory@[0..4c8)] was not released before the reference was garbage collected
ERROR [Reference-Reaper:1] 2019-04-10 16:10:01,627 Ref.java:224 - LEAK DETECTED: a reference (org.apache.cassandra.utils.concurrent.Ref$State@5ad45619) to class org.apache.cassandra.io.util.SafeMemory$MemoryTidy@1143514085:Memory@[7eaa3bdf4000..7eaa3bdf7200) was not released before the reference was garbage collected
что нам нужно сделать?заменить этот узел новым узлом?что означает эта ошибка?мы запускаем очистку после того, как исправление nodetool успешно завершено во всех наших узлах.