Sampada Dehankar created YARN-7601:
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Summary: Incorrect container states recovered as LevelDB uses
alphabetical order
Key: YARN-7601
URL: https://issues.apache.org/jira/browse/YARN-7601
Project: Hadoop YARN
Issue Type: Bug
Reporter: Sampada Dehankar
Assignee: Sampada Dehankar
LevelDB stores key-value pairs in the alphabetical order. Container id
concatenated by its state is used as key. So, even if container goes through
any states in its life cycle, the order of states for following values
retrieved from LevelDB is always going to be as below`:
LAUNCHED
PAUSED
QUEUED
For eg: If a container is LAUNCHED then PAUSED and LAUNCHED again, the
recovered container state is PAUSED currently instead of LAUNCHED.
We propose to store the timestamp as the value while making call to
storeContainerLaunched
storeContainerPaused
storeContainerQueued
so that correct container state is recovered based on timestamps.
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