Sumit Agrawal created HDDS-8417:
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Summary: Cap on queue of commands at DN
Key: HDDS-8417
URL: https://issues.apache.org/jira/browse/HDDS-8417
Project: Apache Ozone
Issue Type: Improvement
Reporter: Sumit Agrawal
Assignee: Sumit Agrawal
Fix For: 1.4.0
When command is operating very slowly, its observed that queue is getting
pilled up. In one of environment, below are queued up causing usages of approx
5GB memory,
* Block delete command: 2.8k
* Close Container command: 13k
* Close pipeline command: 2390k
* replicate container command: 57k
This is happening when disk is almost full and command is running very slow.
SCM keeps sending same command every heartbeat.
So a cap on queue is required and need reject further command accumulation.
This needs to be done for each command type queue based on memory occupancy and
repeating of command from SCM.
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