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Posted to dev@flink.apache.org by "Gyula Fora (JIRA)" <ji...@apache.org> on 2015/07/23 21:56:04 UTC
[jira] [Created] (FLINK-2403) Rework partitioned state
checkpointing logic
Gyula Fora created FLINK-2403:
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Summary: Rework partitioned state checkpointing logic
Key: FLINK-2403
URL: https://issues.apache.org/jira/browse/FLINK-2403
Project: Flink
Issue Type: Improvement
Components: Streaming
Affects Versions: 0.10
Reporter: Gyula Fora
In case of partitioned states, states are stored per-key (creating a statehandle for each key) so that we can later use this for repartitioning without fetching all the states.
While this mechanism might be desired later it is extremely inefficient if we use a state backend such as HDFS as we are creating many small files.
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