seems the issue can clause brain split -------------------------------------- Ranger Tsao
2015-05-29 14:57 GMT+08:00 Jason Wee <peich...@gmail.com>: > why it happened? from the code, it looks like this condition is not null > https://github.com/apache/cassandra/blob/cassandra-2.1.3/src/java/org/apache/cassandra/io/sstable/SSTableReader.java#L921 > > or you can quickly fix this by upgrading to 2.1.5, i noticed there is code > change for this class > https://github.com/apache/cassandra/blob/cassandra-2.1.5/src/java/org/apache/cassandra/io/sstable/SSTableReader.java#L921 > > > hth > > jason > > > > On Fri, May 29, 2015 at 9:39 AM, 曹志富 <cao.zh...@gmail.com> wrote: > >> I have a 25 noedes C* cluster with C* 2.1.3. These days a node occur >> split brain many times。 >> >> check the log I found this: >> >> INFO [MemtableFlushWriter:118] 2015-05-29 08:07:39,176 >> Memtable.java:378 - Completed flushing >> /home/ant/apache-cassandra-2.1.3/bin/../data/data/system/sstable_activity-5a1ff2 >> 67ace03f128563cfae6103c65e/system-sstable_activity-ka-4371-Data.db (8187 >> bytes) for commitlog position ReplayPosition(segmentId=1432775133526, >> position=16684949) >> ERROR [IndexSummaryManager:1] 2015-05-29 08:10:30,209 >> CassandraDaemon.java:167 - Exception in thread >> Thread[IndexSummaryManager:1,1,main] >> java.lang.AssertionError: null >> at >> org.apache.cassandra.io.sstable.SSTableReader.cloneWithNewSummarySamplingLevel(SSTableReader.java:921) >> ~[apache-cassandra-2.1.3.jar:2.1.3] >> at >> org.apache.cassandra.io.sstable.IndexSummaryManager.adjustSamplingLevels(IndexSummaryManager.java:410) >> ~[apache-cassandra-2.1.3.jar:2.1.3] >> at >> org.apache.cassandra.io.sstable.IndexSummaryManager.redistributeSummaries(IndexSummaryManager.java:288) >> ~[apache-cassandra-2.1.3.jar:2.1.3] >> at >> org.apache.cassandra.io.sstable.IndexSummaryManager.redistributeSummaries(IndexSummaryManager.java:238) >> ~[apache-cassandra-2.1.3.jar:2.1.3] >> at >> org.apache.cassandra.io.sstable.IndexSummaryManager$1.runMayThrow(IndexSummaryManager.java:139) >> ~[apache-cassandra-2.1.3.jar:2.1.3] >> at >> org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:28) >> ~[apache-cassandra-2.1.3.jar:2.1.3] >> at >> org.apache.cassandra.concurrent.DebuggableScheduledThreadPoolExecutor$UncomplainingRunnable.run(DebuggableScheduledThreadPoolExecutor.java:82) >> ~[apache-cassandra-2. >> 1.3.jar:2.1.3] >> at >> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) >> [na:1.7.0_71] >> at >> java.util.concurrent.FutureTask.runAndReset(FutureTask.java:304) >> [na:1.7.0_71] >> at >> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:178) >> [na:1.7.0_71] >> at >> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293) >> [na:1.7.0_71] >> at >> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) >> [na:1.7.0_71] >> at >> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) >> [na:1.7.0_71] >> at java.lang.Thread.run(Thread.java:745) [na:1.7.0_71] >> >> I want to know why this and how to fix this >> >> Thanks all >> -------------------------------------- >> Ranger Tsao >> > >
