Zhu Han created CASSANDRA-4533:
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Summary: Cache saving does not work
Key: CASSANDRA-4533
URL: https://issues.apache.org/jira/browse/CASSANDRA-4533
Project: Cassandra
Issue Type: Bug
Components: Core
Affects Versions: 1.1.3, 1.0.11
Reporter: Zhu Han
Cassandra flushes the key and row cache to disk periodically. It also uses a
atomic flag in flushInProgress to enforce single cache writer at any time.
However, the cache saving task could be submitted to CompactionManager
concurrently, as long as the number of worker thread in CompactionManager is
larger than 1.
Due to the effect of above atomic flag, only a cache can be written out to
disk. Other writer are cancelled when the flag is true.
I observe the situation in Cassandra 1.0. If nothing is changed, the problem
should remain in Cassandra 1.1, either.
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