OrderPreservingPartitioner with type validated indexed columns causes
ClassCastException
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Key: CASSANDRA-1373
URL: https://issues.apache.org/jira/browse/CASSANDRA-1373
Project: Cassandra
Issue Type: Bug
Components: Core
Affects Versions: 0.7.0
Environment: Cassandra Trunk
Reporter: Tyler L. Hobbs
Priority: Minor
Fix For: 0.7.0
If OrderPreservingPartitioner is used and you have an indexed column with a
type validator, using batch_mutate to insert column values (like pycassa does)
on the same key and indexed column causes a ClassCastException to be thrown the
*second* time you execute it. That is, the first batch_mutate succeeds, but
the following ones fail. CollatedOrderPreservingPartitioner seems to avoid
this problem. Also, it appears that the row key is being compared to the
column value at some point using the validator's Comparator class (such as
LongType) which is where the actual exception is thrown.
Stack trace below:
{noformat}
java.lang.RuntimeException: java.lang.ClassCastException: java.lang.String
cannot be cast to [B
at
org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:34)
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:619)
Caused by: java.lang.ClassCastException: java.lang.String cannot be cast to [B
at org.apache.cassandra.db.marshal.LongType.compare(LongType.java:27)
at org.apache.cassandra.dht.LocalToken.compareTo(LocalToken.java:45)
at org.apache.cassandra.db.DecoratedKey.compareTo(DecoratedKey.java:82)
at org.apache.cassandra.db.DecoratedKey.compareTo(DecoratedKey.java:37)
at
java.util.concurrent.ConcurrentSkipListMap.doPut(ConcurrentSkipListMap.java:878)
at
java.util.concurrent.ConcurrentSkipListMap.putIfAbsent(ConcurrentSkipListMap.java:1893)
at org.apache.cassandra.db.Memtable.resolve(Memtable.java:127)
at org.apache.cassandra.db.Memtable.put(Memtable.java:119)
at
org.apache.cassandra.db.ColumnFamilyStore.apply(ColumnFamilyStore.java:508)
at org.apache.cassandra.db.Table.applyCF(Table.java:452)
at org.apache.cassandra.db.Table.apply(Table.java:409)
at org.apache.cassandra.db.RowMutation.apply(RowMutation.java:196)
at
org.apache.cassandra.service.StorageProxy$2.runMayThrow(StorageProxy.java:276)
at
org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:30)
... 3 more
{noformat}
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