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From Conan Cook <conan.c...@amee.com>
Subject Truncate causing subsequent timeout on KeyIterator?
Date Wed, 26 Sep 2012 18:13:15 GMT
Hi,

I'm running a bunch of integration tests using an embedded cassandra
instance via the Cassandra Maven Plugin v1.0.0-1, using Hector v1.0-5.
 I've got an issue where one of the tests is using a StringKeyIterator to
iterate over all the keys in a CF, but it gets TimedOutExceptions every
time when trying to communicate with Cassandra; all the other tests using
the same (Spring-wired) keyspace behave fine (stack trace below).  A
previous test is calling a cluster.truncate() to ensure an empty CF before
each test, and it's this that seems to cause the problem - at least,
commenting it out causes the other test to run fine.

Any ideas on what could be causing this?  Both tests are using the same
instance of Keyspace, autowired via Spring, and the same instance of
Cluster in the same way.  No exceptions are being thrown by the truncate
operation - it completes successfully and does its job.

Thanks,


Conan

Stack trace:

[2012-09-26 18:59:53,002] [WARN ] [main] [m.p.c.c.HConnectionManager] Could
not fullfill request on this host CassandraClient<localhost:9170-195>
[2012-09-26 18:59:53,003] [WARN ] [main] [m.p.c.c.HConnectionManager]
Exception:
me.prettyprint.hector.api.exceptions.HTimedOutException: TimedOutException()
        at
me.prettyprint.cassandra.service.ExceptionsTranslatorImpl.translate(ExceptionsTranslatorImpl.java:35)
~[hector-core-1.0-5.jar:na]
        at
me.prettyprint.cassandra.service.KeyspaceServiceImpl$3.execute(KeyspaceServiceImpl.java:163)
~[hector-core-1.0-5.jar:na]
        at
me.prettyprint.cassandra.service.KeyspaceServiceImpl$3.execute(KeyspaceServiceImpl.java:145)
~[hector-core-1.0-5.jar:na]
        at
me.prettyprint.cassandra.service.Operation.executeAndSetResult(Operation.java:103)
~[hector-core-1.0-5.jar:na]
        at
me.prettyprint.cassandra.connection.HConnectionManager.operateWithFailover(HConnectionManager.java:258)
~[hector-core-1.0-5.jar:na]
        at
me.prettyprint.cassandra.service.KeyspaceServiceImpl.operateWithFailover(KeyspaceServiceImpl.java:131)
[hector-core-1.0-5.jar:na]
        at
me.prettyprint.cassandra.service.KeyspaceServiceImpl.getRangeSlices(KeyspaceServiceImpl.java:167)
[hector-core-1.0-5.jar:na]
        at
me.prettyprint.cassandra.model.thrift.ThriftRangeSlicesQuery$1.doInKeyspace(ThriftRangeSlicesQuery.java:66)
[hector-core-1.0-5.jar:na]
        at
me.prettyprint.cassandra.model.thrift.ThriftRangeSlicesQuery$1.doInKeyspace(ThriftRangeSlicesQuery.java:62)
[hector-core-1.0-5.jar:na]
        at
me.prettyprint.cassandra.model.KeyspaceOperationCallback.doInKeyspaceAndMeasure(KeyspaceOperationCallback.java:20)
[hector-core-1.0-5.jar:na]
        at
me.prettyprint.cassandra.model.ExecutingKeyspace.doExecute(ExecutingKeyspace.java:85)
[hector-core-1.0-5.jar:na]
        at
me.prettyprint.cassandra.model.thrift.ThriftRangeSlicesQuery.execute(ThriftRangeSlicesQuery.java:61)
[hector-core-1.0-5.jar:na]
        at
me.prettyprint.cassandra.service.KeyIterator.runQuery(KeyIterator.java:102)
[hector-core-1.0-5.jar:na]

...<snip>...

Caused by: org.apache.cassandra.thrift.TimedOutException: null
        at
org.apache.cassandra.thrift.Cassandra$get_range_slices_result.read(Cassandra.java:12270)
~[cassandra-thrift-1.1.0.jar:1.1.0]
        at
org.apache.thrift.TServiceClient.receiveBase(TServiceClient.java:78)
~[libthrift-0.7.0.jar:0.7.0]
        at
org.apache.cassandra.thrift.Cassandra$Client.recv_get_range_slices(Cassandra.java:683)
~[cassandra-thrift-1.1.0.jar:1.1.0]
        at
org.apache.cassandra.thrift.Cassandra$Client.get_range_slices(Cassandra.java:667)
~[cassandra-thrift-1.1.0.jar:1.1.0]
        at
me.prettyprint.cassandra.service.KeyspaceServiceImpl$3.execute(KeyspaceServiceImpl.java:151)
~[hector-core-1.0-5.jar:na]

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