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Posted to issues@ozone.apache.org by "Lokesh Jain (Jira)" <ji...@apache.org> on 2020/10/29 06:40:00 UTC
[jira] [Assigned] (HDDS-4356) SCM is flooded with useless "Deleting
blocks" messages
[ https://issues.apache.org/jira/browse/HDDS-4356?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Lokesh Jain reassigned HDDS-4356:
---------------------------------
Assignee: Lokesh Jain
> SCM is flooded with useless "Deleting blocks" messages
> ------------------------------------------------------
>
> Key: HDDS-4356
> URL: https://issues.apache.org/jira/browse/HDDS-4356
> Project: Hadoop Distributed Data Store
> Issue Type: Improvement
> Components: SCM
> Affects Versions: 1.0.0
> Reporter: Wei-Chiu Chuang
> Assignee: Lokesh Jain
> Priority: Major
>
> Testing a 1.0.0 SCM.
> I'm seeing these messages flooding SCM log file when a dead DN is detected.
> {noformat}
> 2020-10-19 13:48:19,642 INFO org.apache.hadoop.hdds.scm.node.DeadNodeHandler: A dead datanode is detected. 9b27c38d-9104-491b-b76b-959dc9dd06a2{ip: 10.12.1.82, host: rhel12.ozone.local, networkLocation: /default, certSerialId: null}
> 2020-10-19 13:48:24,894 INFO org.apache.hadoop.hdds.scm.server.SCMBlockProtocolServer: SCM is informed by OM to delete 1000 blocks
> 2020-10-19 13:48:24,894 INFO org.apache.hadoop.hdds.scm.block.BlockManagerImpl: Deleting blocks
> 2020-10-19 13:48:24,894 INFO org.apache.hadoop.hdds.scm.block.BlockManagerImpl: Deleting blocks
> 2020-10-19 13:48:24,894 INFO org.apache.hadoop.hdds.scm.block.BlockManagerImpl: Deleting blocks
> 2020-10-19 13:48:24,894 INFO org.apache.hadoop.hdds.scm.block.BlockManagerImpl: Deleting blocks
> 2020-10-19 13:48:24,894 INFO org.apache.hadoop.hdds.scm.block.BlockManagerImpl: Deleting blocks
> 2020-10-19 13:48:24,894 INFO org.apache.hadoop.hdds.scm.block.BlockManagerImpl: Deleting blocks
> 2020-10-19 13:48:24,894 INFO org.apache.hadoop.hdds.scm.block.BlockManagerImpl: Deleting blocks
> 2020-10-19 13:48:24,895 INFO org.apache.hadoop.hdds.scm.block.BlockManagerImpl: Deleting blocks
> 2020-10-19 13:48:24,895 INFO org.apache.hadoop.hdds.scm.block.BlockManagerImpl: Deleting blocks
> 2020-10-19 13:48:24,895 INFO org.apache.hadoop.hdds.scm.block.BlockManagerImpl: Deleting blocks
> {noformat}
> SCM deletes 1000 blocks max at a time, and the "Deleting blocks" message repeats for 1000 times. Worse, it doesn't give any useful information (at the very least, it should print the block id)
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