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https://issues.apache.org/jira/browse/HDFS-16179?focusedWorklogId=639697&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-639697
]
ASF GitHub Bot logged work on HDFS-16179:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 19/Aug/21 05:01
Start Date: 19/Aug/21 05:01
Worklog Time Spent: 10m
Work Description: tomscut commented on pull request #3313:
URL: https://github.com/apache/hadoop/pull/3313#issuecomment-901611191
> LGTM
Thanks @ayushtkn for your review.
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Issue Time Tracking
-------------------
Worklog Id: (was: 639697)
Time Spent: 20m (was: 10m)
> Update loglevel for BlockManager#chooseExcessRedundancyStriped to avoid too
> much logs
> -------------------------------------------------------------------------------------
>
> Key: HDFS-16179
> URL: https://issues.apache.org/jira/browse/HDFS-16179
> Project: Hadoop HDFS
> Issue Type: Improvement
> Affects Versions: 3.1.0
> Reporter: tomscut
> Assignee: tomscut
> Priority: Minor
> Labels: pull-request-available
> Attachments: log-count.jpg, logs.jpg
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> {code:java}
> private void chooseExcessRedundancyStriped(BlockCollection bc,
> final Collection<DatanodeStorageInfo> nonExcess,
> BlockInfo storedBlock,
> DatanodeDescriptor delNodeHint) {
> ...
> // cardinality of found indicates the expected number of internal blocks
> final int numOfTarget = found.cardinality();
> final BlockStoragePolicy storagePolicy = storagePolicySuite.getPolicy(
> bc.getStoragePolicyID());
> final List<StorageType> excessTypes = storagePolicy.chooseExcess(
> (short) numOfTarget, DatanodeStorageInfo.toStorageTypes(nonExcess));
> if (excessTypes.isEmpty()) {
> LOG.warn("excess types chosen for block {} among storages {} is empty",
> storedBlock, nonExcess);
> return;
> }
> ...
> }
> {code}
>
> IMO, here is just detecting excess StorageType and setting the log level to
> debug has no effect.
>
> We have a cluster that uses the EC policy to store data. The current log
> level is WARN here, and in about 50 minutes, 286,093 logs are printed, which
> can cause other important logs to drown out.
>
> !logs.jpg|width=1167,height=62!
>
> !log-count.jpg|width=760,height=30!
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