Russell Alexander Spitzer created CASSANDRA-9637:
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Summary: CFS selectAndReference Blocks for Compaction
Key: CASSANDRA-9637
URL: https://issues.apache.org/jira/browse/CASSANDRA-9637
Project: Cassandra
Issue Type: Bug
Components: Core
Reporter: Russell Alexander Spitzer
Assignee: Benedict
Fix For: 2.1.x
The Spark Cassandra Connector uses dsecribe_splits_ex to deterimine token
information about the C* cluster. On 2.1.4 this behaves normally and responds
in a few milliseconds. On 2.1.5 the function blocks while compaction is running
which basically makes the function unusable. Under the hood this function
access sstable information using selectAndReference. A debugging session led us
to determine that the error occurred because the code would simply spin (unable
to gain references to compacting tables) while compaction was happening.
A fix was tested and proposed:
https://github.com/belliottsmith/cassandra/tree/fix-spinning
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