Hi All,
I am a bit stumped. When reading at a CL of local_quorum I get
TimedOutExceptions however when reading at any other CL, including ALL,
everything works as expected. Any write CL, including local_quorum, also works
as expected.
I am running a 4 node 0.7 RC1 cluster in datacenter "DC1". "DC2" is planned
for the future but currently has no nodes. I am using Hector 0.7.0-20.
Here is my testing schema:
create keyspace GlobalCacheKeyspaceDC1RF4 with
replication_factor = 4 and
placement_strategy = 'org.apache.cassandra.locator.NetworkTopologyStrategy'
and
strategy_options = [{DC1:4, DC2:0}];
use GlobalCacheKeyspaceDC1RF4;
create column family GlobalCacheCF with
comment = 'General purpose cache' and
column_type = 'Standard' and
comparator = 'BytesType' and
keys_cached = 200000 and
rows_cached = 2000 and
gc_grace = 0 and
read_repair_chance = 0.0;
Here is my cassandra-topology.properties:
10.5.64.15=DC1:R1
10.5.64.28=DC1:R1
10.5.64.56=DC1:R1
10.5.64.39=DC1:R1
# default for unknown nodes
default=DC2:R1
Here is the exception I get when reading at a CL of local_quorum:
1:44:14.176 [main] ERROR m.p.c.connection.HConnectionManager - Could not
fullfill request on this host CassandraClient<dlc05-sea:9160-50>
11:44:14.182 [main] ERROR m.p.c.connection.HConnectionManager - Exception:
me.prettyprint.hector.api.exceptions.HTimedOutException: TimedOutException()
at
me.prettyprint.cassandra.service.ExceptionsTranslatorImpl.translate(ExceptionsTranslatorImpl.java:27)
[hector-0.7.0-20.jar:na]
at
me.prettyprint.cassandra.service.KeyspaceServiceImpl$15.execute(KeyspaceServiceImpl.java:598)
[hector-0.7.0-20.jar:na]
at
me.prettyprint.cassandra.service.KeyspaceServiceImpl$15.execute(KeyspaceServiceImpl.java:587)
[hector-0.7.0-20.jar:na]
at
me.prettyprint.cassandra.service.Operation.executeAndSetResult(Operation.java:89)
[hector-0.7.0-20.jar:na]
at
me.prettyprint.cassandra.connection.HConnectionManager.operateWithFailover(HConnectionManager.java:101)
[hector-0.7.0-20.jar:na]
at
me.prettyprint.cassandra.service.KeyspaceServiceImpl.operateWithFailover(KeyspaceServiceImpl.java:129)
[hector-0.7.0-20.jar:na]
at
me.prettyprint.cassandra.service.KeyspaceServiceImpl.getColumn(KeyspaceServiceImpl.java:604)
[hector-0.7.0-20.jar:na]
at
me.prettyprint.cassandra.model.thrift.ThriftColumnQuery$1.doInKeyspace(ThriftColumnQuery.java:57)
[hector-0.7.0-20.jar:na]
at
me.prettyprint.cassandra.model.thrift.ThriftColumnQuery$1.doInKeyspace(ThriftColumnQuery.java:52)
[hector-0.7.0-20.jar:na]
at
me.prettyprint.cassandra.model.KeyspaceOperationCallback.doInKeyspaceAndMeasure(KeyspaceOperationCallback.java:20)
[hector-0.7.0-20.jar:na]
at
me.prettyprint.cassandra.model.ExecutingKeyspace.doExecute(ExecutingKeyspace.java:65)
[hector-0.7.0-20.jar:na]
at
me.prettyprint.cassandra.model.thrift.ThriftColumnQuery.execute(ThriftColumnQuery.java:51)
[hector-0.7.0-20.jar:na]
There are no warnings or errors in cassandra.log.
Any guidance would be appreciated.
Thanks,
-Thor
