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Posted to dev@kafka.apache.org by "Damian Guy (JIRA)" <ji...@apache.org> on 2016/12/14 16:51:58 UTC
[jira] [Created] (KAFKA-4540) Suspended tasks that are not assigned
to the StreamThread need to be closed before new active and standby tasks
are created
Damian Guy created KAFKA-4540:
---------------------------------
Summary: Suspended tasks that are not assigned to the StreamThread need to be closed before new active and standby tasks are created
Key: KAFKA-4540
URL: https://issues.apache.org/jira/browse/KAFKA-4540
Project: Kafka
Issue Type: Bug
Components: streams
Affects Versions: 0.10.2.0
Reporter: Damian Guy
Assignee: Damian Guy
Fix For: 0.10.2.0
When partition assignment happens we first try and add the active tasks and then add the standby tasks. The problem with this is that a new active task might already be an existing suspended standby task. if this is the case then when the active task initialises it will throw an exception from RocksDB:
{{Caused by: org.rocksdb.RocksDBException: IO error: lock /tmp/kafka-streams-7071/kafka-music-charts/1_1/rocksdb/all-songs/LOCK: No locks available}}
We need to make sure we have removed an closed any no-longer assigned Suspended tasks before creating new tasks.
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