I may have found a trigger that is causing these problems. Anyone seen these compaction problems in 1.1? I did run scrub on all my 1.0 data to convert it to 1.1 and fix level-manifest problems before I started running 1.1.
1 node: ERROR [CompactionExecutor:281] 2013-02-06 23:56:16,183 AbstractCassandraDaemon.java (line 135) Exception in thread Thread[Comp actionExecutor:281,1,main] java.io.IOError: org.apache.cassandra.db.ColumnSerializer$CorruptColumnException: invalid column name length 0 at org.apache.cassandra.db.compaction.PrecompactedRow.merge(PrecompactedRow.java:116) at org.apache.cassandra.db.compaction.PrecompactedRow.<init>(PrecompactedRow.java:99) at org.apache.cassandra.db.compaction.CompactionController.getCompactedRow(CompactionController.java:176) at org.apache.cassandra.db.compaction.CompactionIterable$Reducer.getReduced(CompactionIterable.java:83) at org.apache.cassandra.db.compaction.CompactionIterable$Reducer.getReduced(CompactionIterable.java:68) at org.apache.cassandra.utils.MergeIterator$ManyToOne.consume(MergeIterator.java:118) at org.apache.cassandra.utils.MergeIterator$ManyToOne.computeNext(MergeIterator.java:101) at com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:140) at com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:135) at com.google.common.collect.Iterators$7.computeNext(Iterators.java:614) at com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:140) at com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:135) at org.apache.cassandra.db.compaction.CompactionTask.execute(CompactionTask.java:173) at org.apache.cassandra.db.compaction.LeveledCompactionTask.execute(LeveledCompactionTask.java:50) at org.apache.cassandra.db.compaction.CompactionManager$2.runMayThrow(CompactionManager.java:164) at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:30) at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source) at java.util.concurrent.FutureTask.run(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) Caused by: org.apache.cassandra.db.ColumnSerializer$CorruptColumnException: invalid column name length 0 at org.apache.cassandra.db.ColumnSerializer.deserialize(ColumnSerializer.java:98) at org.apache.cassandra.db.ColumnSerializer.deserialize(ColumnSerializer.java:37) at org.apache.cassandra.db.ColumnFamilySerializer.deserializeColumns(ColumnFamilySerializer.java:144) at org.apache.cassandra.io.sstable.SSTableIdentityIterator.getColumnFamilyWithColumns(SSTableIdentityIterator.java:234 ) at org.apache.cassandra.db.compaction.PrecompactedRow.merge(PrecompactedRow.java:112) ... 21 more 2nd node: ERROR [CompactionExecutor:266] 2013-02-06 23:51:35,181 AbstractCassandraDaemon.java (line 135) Exception in thread Thread[Comp actionExecutor:266,1,main] java.io.IOError: java.io.EOFException at org.apache.cassandra.db.compaction.PrecompactedRow.merge(PrecompactedRow.java:116) at org.apache.cassandra.db.compaction.PrecompactedRow.<init>(PrecompactedRow.java:99) at org.apache.cassandra.db.compaction.CompactionController.getCompactedRow(CompactionController.java:176) at org.apache.cassandra.db.compaction.CompactionIterable$Reducer.getReduced(CompactionIterable.java:83) at org.apache.cassandra.db.compaction.CompactionIterable$Reducer.getReduced(CompactionIterable.java:68) at org.apache.cassandra.utils.MergeIterator$ManyToOne.consume(MergeIterator.java:118) at org.apache.cassandra.utils.MergeIterator$ManyToOne.computeNext(MergeIterator.java:101) at com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:140) at com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:135) at com.google.common.collect.Iterators$7.computeNext(Iterators.java:614) at com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:140) at com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:135) at org.apache.cassandra.db.compaction.CompactionTask.execute(CompactionTask.java:173) at org.apache.cassandra.db.compaction.LeveledCompactionTask.execute(LeveledCompactionTask.java:50) at org.apache.cassandra.db.compaction.CompactionManager$2.runMayThrow(CompactionManager.java:164) at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:30) at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source) at java.util.concurrent.FutureTask.run(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) Caused by: java.io.EOFException at java.io.RandomAccessFile.readFully(Unknown Source) at java.io.RandomAccessFile.readFully(Unknown Source) at org.apache.cassandra.utils.BytesReadTracker.readFully(BytesReadTracker.java:95) at org.apache.cassandra.utils.ByteBufferUtil.read(ByteBufferUtil.java:401) at org.apache.cassandra.utils.ByteBufferUtil.readWithLength(ByteBufferUtil.java:363) at org.apache.cassandra.db.ColumnSerializer.deserialize(ColumnSerializer.java:120) at org.apache.cassandra.db.ColumnSerializer.deserialize(ColumnSerializer.java:37) at org.apache.cassandra.db.ColumnFamilySerializer.deserializeColumns(ColumnFamilySerializer.java:144) On Wed, Feb 6, 2013 at 11:32 AM, Terry Cumaranatunge <cumar...@gmail.com>wrote: > I've gotten timeouts on clients when using Cassandra 1.1.8 in a cluster of > 12 nodes, but I don't see the same behavior when using Cassandra 1.0.10. > So, to do a controlled experiment, the following was tried: > > 1. Started with Cassandra 1.0.10. Built a database and ran our test tools > against it to build a database > 2. Ran workload to ensure no timeout problems were seen. Stopped the load > 3. Upgraded only 2 of the nodes in the cluster to 1.1.8. In the cluster of > 12 nodes. Ran scrub afterwards as document states to convert sstables to > 1.1 format and to fix level-manifest problems. > 4. Started load back up > 5. After some time, started seeing timeouts on the client for requests > that go to the 1.1.8 nodes (i.e. requests sent to those nodes as the > coordinator node) > > There appears to be a pattern in these timeouts in that a large burst of > them occur every 10 minutes (on the 10 minute boundary of the hour, like > 10:10:XX, 10:20:YY, 10:30:ZZ etc.). All clients see the timeouts from those > two 1.1.8 nodes at the same exact time. The workload is not I/O bound at > this point and requests are not being dropped either based on tpstat > output. I don't see hinted handoff messages either as I believe that > happens every 10 minutes. Key cache size is set to 2.7GB and memtable size > is 1/3 of heap (2.7GB). The key cache memory usage is same as 1.0.10 based > on heap size calculator. There are no GC pauses or any type of heap > pressure messages in the logs. This is with Java 1.6.0.38. > > Does anyone know of some periodic tasks in Cassandra 1.1 that happens > every 10 minutes that could explain this problem or have any ideas? > > Thanks >