Details
Description
Most error messages and stacktraces give you no clue as to what keyspace or table was causing the problem. For example:
ERROR [MutationStage:61648] 2014-05-20 12:05:45,145 CassandraDaemon.java (line 198) Exception in thread Thread[MutationStage:61648,5,main] java.lang.IllegalArgumentException at java.nio.Buffer.limit(Unknown Source) at org.apache.cassandra.db.marshal.AbstractCompositeType.getBytes(AbstractCompositeType.java:63) at org.apache.cassandra.db.marshal.AbstractCompositeType.getWithShortLength(AbstractCompositeType.java:72) at org.apache.cassandra.db.marshal.AbstractCompositeType.compare(AbstractCompositeType.java:98) at org.apache.cassandra.db.marshal.AbstractCompositeType.compare(AbstractCompositeType.java:35) at edu.stanford.ppl.concurrent.SnapTreeMap$1.compareTo(SnapTreeMap.java:538) at edu.stanford.ppl.concurrent.SnapTreeMap.attemptUpdate(SnapTreeMap.java:1108) at edu.stanford.ppl.concurrent.SnapTreeMap.updateUnderRoot(SnapTreeMap.java:1059) at edu.stanford.ppl.concurrent.SnapTreeMap.update(SnapTreeMap.java:1023) at edu.stanford.ppl.concurrent.SnapTreeMap.putIfAbsent(SnapTreeMap.java:985) at org.apache.cassandra.db.AtomicSortedColumns$Holder.addColumn(AtomicSortedColumns.java:328) at org.apache.cassandra.db.AtomicSortedColumns.addAllWithSizeDelta(AtomicSortedColumns.java:200) at org.apache.cassandra.db.Memtable.resolve(Memtable.java:226) at org.apache.cassandra.db.Memtable.put(Memtable.java:173) at org.apache.cassandra.db.ColumnFamilyStore.apply(ColumnFamilyStore.java:893) at org.apache.cassandra.db.Keyspace.apply(Keyspace.java:368) at org.apache.cassandra.db.Keyspace.apply(Keyspace.java:333) at org.apache.cassandra.db.RowMutation.apply(RowMutation.java:206) at org.apache.cassandra.db.RowMutationVerbHandler.doVerb(RowMutationVerbHandler.java:56) at org.apache.cassandra.net.MessageDeliveryTask.run(MessageDeliveryTask.java:60) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source)
We should try to include info on the keyspace and column family in the error messages or logs whenever possible. This includes reads, writes, compactions, flushes, repairs, and probably more.