Caleb Rackliffe created CASSANDRA-17740:
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Summary: BulkLoader tool initializes schema unnecessarily via
streaming
Key: CASSANDRA-17740
URL: https://issues.apache.org/jira/browse/CASSANDRA-17740
Project: Cassandra
Issue Type: Bug
Reporter: Caleb Rackliffe
Assignee: Jon Meredith
Changes to streaming setup code for CASSANDRA-17663 mean that {{BulkLoader}}
initializes the schema/system keyspace, which is not what we want in a tool.
Initialization is due to a call to {{SystemKeyspace.getPreferredIP}} from the
{{BulkLoader}} when it starts to transmit the SSTables from the bulk loader to
the Cassandra instance.
{{noformat}}
getPreferredIP:1063, SystemKeyspace (org.apache.cassandra.db)
sendMessage:213, StreamingMultiplexedChannel
(org.apache.cassandra.streaming.async)
sendControlMessage:191, StreamingMultiplexedChannel
(org.apache.cassandra.streaming.async)
sendControlMessage:1033, StreamSession (org.apache.cassandra.streaming)
startStreamingFiles:1257, StreamSession (org.apache.cassandra.streaming)
prepareSynAck:802, StreamSession (org.apache.cassandra.streaming)
messageReceived:622, StreamSession (org.apache.cassandra.streaming)
run:76, StreamDeserializingTask (org.apache.cassandra.streaming)
run:30, FastThreadLocalRunnable (io.netty.util.concurrent)
run:748, Thread (java.lang)
{{noformat}}
The existing {{BulkLoaderTest}} fails to detect this as it doesn't actually
connect to anything so does not initialize streaming.
Affects 4.1 and trunk, and may affect 4.0, although the 4.0 patch for
CASSANDRA-17663 is different than 4.1+, and may require different mitigation.
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