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https://issues.apache.org/jira/browse/HDFS-13811?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16987723#comment-16987723
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Hudson commented on HDFS-13811:
-------------------------------
SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #17720 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/17720/])
HDFS-13811. RBF: Race condition between router admin quota update and (yqlin:
rev 47fdae79041ba2bb036ef7723a93ade5b1ac3619)
* (edit)
hadoop-hdfs-project/hadoop-hdfs-rbf/src/test/java/org/apache/hadoop/hdfs/server/federation/router/TestRouterQuota.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/RouterQuotaManager.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/RouterQuotaUpdateService.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/store/impl/MountTableStoreImpl.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/Router.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/store/MountTableStore.java
> RBF: Race condition between router admin quota update and periodic quota
> update service
> ---------------------------------------------------------------------------------------
>
> Key: HDFS-13811
> URL: https://issues.apache.org/jira/browse/HDFS-13811
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Affects Versions: 3.1.0
> Reporter: Dibyendu Karmakar
> Assignee: Jinglun
> Priority: Major
> Fix For: 3.3.0
>
> Attachments: HDFS-13811-000.patch, HDFS-13811-HDFS-13891-000.patch,
> HDFS-13811.001.patch, HDFS-13811.002.patch, HDFS-13811.003.patch,
> HDFS-13811.004.patch, HDFS-13811.005.patch, HDFS-13811.006.patch,
> HDFS-13811.007.patch
>
>
> If we try to update quota of an existing mount entry and at the same time
> periodic quota update service is running on the same mount entry, it is
> leading the mount table to _inconsistent state._
> Here transactions are:
> A - Quota update service is fetching mount table entries.
> B - Quota update service is updating the mount table with current usage.
> A' - User is trying to update quota using admin cmd.
> and the transaction sequence is [ A A' B ]
> quota update service is updating the mount table with old quota value.
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