Normal Description
After upgrading to 1.1.1 (from 1.1.0) I have started experiencing StackOverflowError's resulting in compaction backlog and failure to restart.
The ring currently consists of 6 DC's and 22 nodes using LCS & compression. This issue was first noted on 2 nodes in one DC and then appears to have spread to various other nodes in the other DC's.
When the first occurrence of this was found I restarted the instance but it failed to start so I cleared its data and treated it as a replacement node for the token it was previously responsible for. This node successfully streamed all the relevant data back but failed again a number of hours later with the same StackOverflowError and again was unable to restart.
The initial stack overflow error on a running instance looks like this:
ERROR [CompactionExecutor:314] 2012-06-07 09:59:43,017 AbstractCassandraDaemon.java (line 134) Exception in thread Thread[CompactionExecutor:314,1,main]
java.lang.StackOverflowError
at java.util.Arrays.mergeSort(Arrays.java:1157)
at java.util.Arrays.sort(Arrays.java:1092)
at java.util.Collections.sort(Collections.java:134)
at org.apache.cassandra.utils.IntervalTree.IntervalNode.findMinMedianMax(IntervalNode.java:114)
at org.apache.cassandra.utils.IntervalTree.IntervalNode.<init>(IntervalNode.java:49)
at org.apache.cassandra.utils.IntervalTree.IntervalNode.<init>(IntervalNode.java:62)
at org.apache.cassandra.utils.IntervalTree.IntervalNode.<init>(IntervalNode.java:62)
at org.apache.cassandra.utils.IntervalTree.IntervalNode.<init>(IntervalNode.java:62)
[snip - this repeats until stack overflow. Compactions stop from this point onwards]
I restarted this failing instance with DEBUG logging enabled and it throws the following exception part way through startup:
ERROR 11:37:51,046 Exception in thread Thread[OptionalTasks:1,5,main]
java.lang.StackOverflowError
at org.slf4j.helpers.MessageFormatter.safeObjectAppend(MessageFormatter.java:307)
at org.slf4j.helpers.MessageFormatter.deeplyAppendParameter(MessageFormatter.java:276)
at org.slf4j.helpers.MessageFormatter.arrayFormat(MessageFormatter.java:230)
at org.slf4j.helpers.MessageFormatter.format(MessageFormatter.java:124)
at org.slf4j.impl.Log4jLoggerAdapter.debug(Log4jLoggerAdapter.java:228)
at org.apache.cassandra.utils.IntervalTree.IntervalNode.<init>(IntervalNode.java:45)
at org.apache.cassandra.utils.IntervalTree.IntervalNode.<init>(IntervalNode.java:62)
at org.apache.cassandra.utils.IntervalTree.IntervalNode.<init>(IntervalNode.java:62)
[snip - this repeats until stack overflow]
at org.apache.cassandra.utils.IntervalTree.IntervalNode.<init>(IntervalNode.java:62)
at org.apache.cassandra.utils.IntervalTree.IntervalNode.<init>(IntervalNode.java:64)
at org.apache.cassandra.utils.IntervalTree.IntervalNode.<init>(IntervalNode.java:62)
at org.apache.cassandra.utils.IntervalTree.IntervalNode.<init>(IntervalNode.java:62)
at org.apache.cassandra.utils.IntervalTree.IntervalNode.<init>(IntervalNode.java:64)
at org.apache.cassandra.utils.IntervalTree.IntervalNode.<init>(IntervalNode.java:62)
at org.apache.cassandra.utils.IntervalTree.IntervalNode.<init>(IntervalNode.java:62)
at org.apache.cassandra.utils.IntervalTree.IntervalNode.<init>(IntervalNode.java:64)
at org.apache.cassandra.utils.IntervalTree.IntervalNode.<init>(IntervalNode.java:62)
at org.apache.cassandra.utils.IntervalTree.IntervalNode.<init>(IntervalNode.java:62)
at org.apache.cassandra.utils.IntervalTree.IntervalNode.<init>(IntervalNode.java:62)
at org.apache.cassandra.utils.IntervalTree.IntervalTree.<init>(IntervalTree.java:39)
at org.apache.cassandra.db.DataTracker.buildIntervalTree(DataTracker.java:560)
at org.apache.cassandra.db.DataTracker$View.replace(DataTracker.java:617)
at org.apache.cassandra.db.DataTracker.replace(DataTracker.java:320)
at org.apache.cassandra.db.DataTracker.addInitialSSTables(DataTracker.java:259)
at org.apache.cassandra.db.ColumnFamilyStore.<init>(ColumnFamilyStore.java:234)
at org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:331)
at org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:309)
at org.apache.cassandra.db.Table.initCf(Table.java:367)
at org.apache.cassandra.db.Table.<init>(Table.java:299)
at org.apache.cassandra.db.Table.open(Table.java:114)
at org.apache.cassandra.db.Table.open(Table.java:97)
at org.apache.cassandra.db.Table$2.apply(Table.java:574)
at org.apache.cassandra.db.Table$2.apply(Table.java:571)
at com.google.common.collect.Iterators$8.next(Iterators.java:751)
at org.apache.cassandra.db.ColumnFamilyStore.all(ColumnFamilyStore.java:1625)
at org.apache.cassandra.db.MeteredFlusher.countFlushingBytes(MeteredFlusher.java:118)
at org.apache.cassandra.db.MeteredFlusher.run(MeteredFlusher.java:45)
at org.apache.cassandra.concurrent.DebuggableScheduledThreadPoolExecutor$UncomplainingRunnable.run(DebuggableScheduledThreadPoolExecutor.java:79)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:351)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:178)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:165)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:267)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:636)
DEBUG 11:37:51,052 Initializing ksU.cfS
And then finally fails with the following:
DEBUG 11:49:03,752 Creating IntervalNode from [Interval(DecoratedKey(104860264640932324846851821824650966808, 4fcc88eb0218216164673394), DecoratedKey(93975306025956344620001177071135439009, 4fc8fb042c98458c7a58bc3b)), Interval(DecoratedKey(104860264640932324846851821824650966808, 4fcc88eb0218216164673394), DecoratedKey(93975306025956344620001177071135439009, 4fc8fb042c98458c7a58bc3b)), Interval(DecoratedKey(104860264640932324846851821824650966808, 4fcc88eb0218216164673394), DecoratedKey(93975306025956344620001177071135439009, 4fc8fb042c98458c7a58bc3b)), Interval(DecoratedKey(104860264640932324846851821824650966808, 4fcc88eb0218216164673394), DecoratedKey(93975306025956344620001177071135439009, 4fc8fb042c98458c7a58bc3b)), Interval(DecoratedKey(104860264640932324846851821824650966808, 4fcc88eb0218216164673394), DecoratedKey(93975306025956344620001177071135439009, 4fc8fb042c98458c7a58bc3b)), Interval(DecoratedKey(104860264640932324846851821824650966808, 4fcc88eb0218216164673394), DecoratedKey(93975306025956344620001177071135439009, 4fc8fb042c98458c7a58bc3b))]
java.lang.reflect.InvocationTargetException
DEBUG 11:49:03,753 Configured datacenter replicas are dc1:2, dc2:2, dc3:2, dc4:2, dc5:0, dc6:2, dc7:0, dc8:0, dc9:2
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:616)
at org.apache.commons.daemon.support.DaemonLoader.load(DaemonLoader.java:160)
Caused by: java.lang.StackOverflowError
at org.slf4j.helpers.MessageFormatter.safeObjectAppend(MessageFormatter.java:307)
at org.slf4j.helpers.MessageFormatter.deeplyAppendParameter(MessageFormatter.java:276)
at org.slf4j.helpers.MessageFormatter.arrayFormat(MessageFormatter.java:230)
at org.slf4j.helpers.MessageFormatter.format(MessageFormatter.java:124)
at org.slf4j.impl.Log4jLoggerAdapter.debug(Log4jLoggerAdapter.java:228)
at org.apache.cassandra.utils.IntervalTree.IntervalNode.<init>(IntervalNode.java:45)
at org.apache.cassandra.utils.IntervalTree.IntervalNode.<init>(IntervalNode.java:62)
at org.apache.cassandra.utils.IntervalTree.IntervalNode.<init>(IntervalNode.java:62)
[snip - this repeats until stack overflow]
at org.apache.cassandra.utils.IntervalTree.IntervalNode.<init>(IntervalNode.java:62)
at org.apache.cassandra.utils.IntervalTree.IntervalNode.<init>(IntervalNode.java:62)
at org.apache.cassandra.utils.IntervalTree.IntervalNode.<init>(IntervalNode.java:62)
at org.apache.cassandra.utils.IntervalTree.IntervalNode.<init>(IntervalNode.java:64)
at org.apache.cassandra.utils.IntervalTree.IntervalNode.<init>(IntervalNode.java:62)
at org.apache.cassandra.utils.IntervalTree.IntervalNode.<init>(IntervalNode.java:62)
at org.apache.cassandra.utils.IntervalTree.IntervalNode.<init>(IntervalNode.java:64)
at org.apache.cassandra.utils.IntervalTree.IntervalNode.<init>(IntervalNode.java:62)
at org.apache.cassandra.utils.IntervalTree.IntervalNode.<init>(IntervalNode.java:62)
at org.apache.cassandra.utils.IntervalTree.IntervalNode.<init>(IntervalNode.java:64)
at org.apache.cassandra.utils.IntervalTree.IntervalNode.<init>(IntervalNode.java:62)
at org.apache.cassandra.utils.IntervalTree.IntervalNode.<init>(IntervalNode.java:62)
at org.apache.cassandra.utils.IntervalTree.IntervalNode.<init>(IntervalNode.java:62)
at org.apache.cassandra.utils.IntervalTree.IntervalTree.<init>(IntervalTree.java:39)
at org.apache.cassandra.db.DataTracker.buildIntervalTree(DataTracker.java:560)
at org.apache.cassandra.db.DataTracker$View.replace(DataTracker.java:617)
at org.apache.cassandra.db.DataTracker.replace(DataTracker.java:320)
at org.apache.cassandra.db.DataTracker.addInitialSSTables(DataTracker.java:259)
at org.apache.cassandra.db.ColumnFamilyStore.<init>(ColumnFamilyStore.java:234)
at org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:331)
at org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:309)
at org.apache.cassandra.db.Table.initCf(Table.java:367)
at org.apache.cassandra.db.Table.<init>(Table.java:299)
at org.apache.cassandra.db.Table.open(Table.java:114)
at org.apache.cassandra.db.Table.open(Table.java:97)
at org.apache.cassandra.service.AbstractCassandraDaemon.setup(AbstractCassandraDaemon.java:204)
at org.apache.cassandra.service.AbstractCassandraDaemon.init(AbstractCassandraDaemon.java:254)
... 5 more
Cannot load daemon
Service exit with a return value of 3
Running with assertions enabled allows me to start the instance but when doing so I get errors such as:
ERROR 01:22:22,753 Exception in thread Thread[SSTableBatchOpen:2,5,main]java.lang.AssertionError: SSTable first key DecoratedKey(100294972947100949193477090306072672386, 4fcf051ef5067d7f17d9fc35) > last key DecoratedKey(90250429663386465697464050082134975058, 4fce996e3c1eed8c4b17dd66)
at org.apache.cassandra.io.sstable.SSTableReader.load(SSTableReader.java:412)
at org.apache.cassandra.io.sstable.SSTableReader.open(SSTableReader.java:187)
at org.apache.cassandra.io.sstable.SSTableReader$1.run(SSTableReader.java:225)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:636)
and:
ERROR 01:27:58,946 Exception in thread Thread[CompactionExecutor:9,1,main]
java.lang.AssertionError: Last written key DecoratedKey(81958437188197992567937826278457419048, 4fa1aebad23f81e4321d344d) >= current key DecoratedKey(64546479828744423263742604083767363606, 4fcafc0f19f6a8092d4d4f94) writing into /var/lib/XX/data/cassandra/ks1/cf1/ks1-cf1-tmp-hd-657317-Data.db
at org.apache.cassandra.io.sstable.SSTableWriter.beforeAppend(SSTableWriter.java:134)
at org.apache.cassandra.io.sstable.SSTableWriter.append(SSTableWriter.java:153)
at org.apache.cassandra.db.compaction.CompactionTask.execute(CompactionTask.java:159)
at org.apache.cassandra.db.compaction.LeveledCompactionTask.execute(LeveledCompactionTask.java:50)
at org.apache.cassandra.db.compaction.CompactionManager$1.runMayThrow(CompactionManager.java:150)
at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:30)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:636)
Just like the initial errors compactions appear to stop occurring after this point.
Given the above this looks like sstables are getting corrupted. By restarting nodes I am able to identify several hundred sstables exhibiting the same problem and this appears to be growing.
I have tried scrubbing those affected nodes but the problem continues to occur. If this is due to sstable corruptions is there another way of validating sstables for correctness? Given that it has spread to various servers in other DC's it looks like this is directly related to the 1.1.1 upgrade recently performed on the ring.