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https://issues.apache.org/jira/browse/HDFS-15658?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17222070#comment-17222070
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Hadoop QA commented on HDFS-15658:
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| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m
0s{color} | | {color:blue} Docker mode activated. {color} |
| {color:red}-1{color} | {color:red} docker {color} | {color:red} 3m
54s{color} | | {color:red} Docker failed to build yetus/hadoop:06eafeedf12.
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|| Subsystem || Report/Notes ||
| JIRA Issue | HDFS-15658 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/13014273/HDFS-15658-branch-2.7.patch
|
| Console output |
https://ci-hadoop.apache.org/job/PreCommit-HDFS-Build/271/console |
| versions | git=2.17.1 |
| Powered by | Apache Yetus 0.14.0-SNAPSHOT https://yetus.apache.org |
This message was automatically generated.
> Improve datanode capability balancing
> -------------------------------------
>
> Key: HDFS-15658
> URL: https://issues.apache.org/jira/browse/HDFS-15658
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: hdfs
> Reporter: chuanjie.duan
> Priority: Major
> Attachments: HDFS-15658-branch-2.7.patch
>
>
> How about adjust the order of choosing replication to deletion?
> Is there any other meaning, choosing "oldestHeartbeatStorage" first?
>
> public DatanodeStorageInfo chooseReplicaToDelete(
> Collection<DatanodeStorageInfo> moreThanOne,
> Collection<DatanodeStorageInfo> exactlyOne,
> final List<StorageType> excessTypes,
> Map<String, List<DatanodeStorageInfo>> rackMap) {
> ......
> final DatanodeStorageInfo storage;
> if (minSpaceStorage != null) {
> storage = minSpaceStorage;
> } else if (oldestHeartbeatStorage != null) {
> storage = oldestHeartbeatStorage;
> } else {
> return null;
> }
> excessTypes.remove(storage.getStorageType());
> return storage;
> }
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