Hi,
We are upgrading our 1.0 Cassandra installation to 1.2 (via 1.1), and had
Cassandra 1.2.5 running in test for a while.
Everything seems fine except that exceptions like below come sporadically,
without correlating with anything else. They *seem* to come during work hours,
so it can be that one of our devs run invalid commands, but then noone
complained about any errors they'd get.
I have not found any user-level exceptions in the client logs either, so I
wonder what this might be, how serious it is, what are the consequences, how to
avoid (if necessary), etc...
Unfortunately the logs don't say anything about in which keyspace this occurred
- I could not find any sstables with index 1771 (if that is what that number
means...).
Any help is appreciated.
ERROR [ReadStage:1771] 2013-08-13 16:40:17,532 CassandraDaemon.java (line 175)
Exception in thread Thread[ReadStage:1771,5,main]
java.lang.IllegalArgumentException: fromIndex(60) > toIndex(0)
at java.util.SubList.<init>(AbstractList.java:604)
at java.util.RandomAccessSubList.<init>(AbstractList.java:758)
at java.util.AbstractList.subList(AbstractList.java:468)
at
org.apache.cassandra.db.ArrayBackedSortedColumns$SlicesIterator.computeNext(ArrayBackedSortedColumns.java:365)
at
org.apache.cassandra.db.ArrayBackedSortedColumns$SlicesIterator.computeNext(ArrayBackedSortedColumns.java:325)
at
com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:143)
at
com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:138)
at org.apache.cassandra.db.Memtable$6.hasNext(Memtable.java:356)
at
org.apache.cassandra.db.filter.QueryFilter$2.getNext(QueryFilter.java:171)
at
org.apache.cassandra.db.filter.QueryFilter$2.hasNext(QueryFilter.java:154)
at
org.apache.cassandra.utils.MergeIterator$OneToOne.computeNext(MergeIterator.java:199)
at
com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:143)
at
com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:138)
at
org.apache.cassandra.db.filter.SliceQueryFilter.collectReducedColumns(SliceQueryFilter.java:157)
at
org.apache.cassandra.db.filter.QueryFilter.collateColumns(QueryFilter.java:136)
at
org.apache.cassandra.db.filter.QueryFilter.collateOnDiskAtom(QueryFilter.java:84)
at
org.apache.cassandra.db.ColumnFamilyStore.filterColumnFamily(ColumnFamilyStore.java:1242)
at
org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1210)
at
org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1126)
at org.apache.cassandra.db.Table.getRow(Table.java:347)
at
org.apache.cassandra.db.SliceFromReadCommand.getRow(SliceFromReadCommand.java:70)
at
org.apache.cassandra.db.ReadVerbHandler.doVerb(ReadVerbHandler.java:44)
at
org.apache.cassandra.net.MessageDeliveryTask.run(MessageDeliveryTask.java:56)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
Thanks,
Tamas
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
Tamas Foldesi
Senior Software Engineer
Thomson Reuters
