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Posted to dev@flink.apache.org by "Chesnay Schepler (JIRA)" <ji...@apache.org> on 2016/06/27 10:28:52 UTC
[jira] [Created] (FLINK-4123) CassandraWriteAheadSink can hang on
cassandra failure
Chesnay Schepler created FLINK-4123:
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Summary: CassandraWriteAheadSink can hang on cassandra failure
Key: FLINK-4123
URL: https://issues.apache.org/jira/browse/FLINK-4123
Project: Flink
Issue Type: Bug
Components: Cassandra Connector
Affects Versions: 1.1.0
Reporter: Chesnay Schepler
Assignee: Chesnay Schepler
Priority: Blocker
Fix For: 1.1.0
The CassandraWriteAheadSink verifies that all writes send to cassandra have been applied by counting how many were sent and how many callbacks were activated. Once all writes were sent the sink enters into a loop that is only exited once both counts are equal.
Thus, should cassandra crash after all writes were sent, without having acknowledged all writes, the sink will deadlock in the loop.
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