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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-11684) S3a to use thread pool that blocks clients
Date Fri, 06 Nov 2015 04:21:28 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-11684?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14993072#comment-14993072
] 

Hudson commented on HADOOP-11684:
---------------------------------

SUCCESS: Integrated in Hadoop-Yarn-trunk #1368 (See [https://builds.apache.org/job/Hadoop-Yarn-trunk/1368/])
HADOOP-11684. S3a to use thread pool that blocks clients. (Thomas Demoor (lei: rev bff7c90a5686de106ca7a866982412c5dfa01632)
* hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/Constants.java
* hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/S3AFileSystem.java
* hadoop-common-project/hadoop-common/src/main/resources/core-default.xml
* hadoop-tools/hadoop-aws/src/test/java/org/apache/hadoop/fs/s3a/TestBlockingThreadPoolExecutorService.java
* hadoop-tools/hadoop-aws/src/site/markdown/tools/hadoop-aws/index.md
* hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/BlockingThreadPoolExecutorService.java
* hadoop-common-project/hadoop-common/CHANGES.txt
* hadoop-tools/hadoop-aws/src/test/java/org/apache/hadoop/fs/s3a/TestS3ABlockingThreadPool.java
* hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/S3AFastOutputStream.java


> S3a to use thread pool that blocks clients
> ------------------------------------------
>
>                 Key: HADOOP-11684
>                 URL: https://issues.apache.org/jira/browse/HADOOP-11684
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3
>    Affects Versions: 2.7.0
>            Reporter: Thomas Demoor
>            Assignee: Thomas Demoor
>             Fix For: 2.8.0, 3.0.0
>
>         Attachments: HADOOP-11684-001.patch, HADOOP-11684-002.patch, HADOOP-11684-003.patch,
HADOOP-11684-004.patch, HADOOP-11684-005.patch, HADOOP-11684-006.patch
>
>
> Currently, if fs.s3a.max.total.tasks are queued and another (part)upload wants to start,
a RejectedExecutionException is thrown. 
> We should use a threadpool that blocks clients, nicely throtthling them, rather than
throwing an exception. F.i. something similar to https://github.com/apache/incubator-s4/blob/master/subprojects/s4-comm/src/main/java/org/apache/s4/comm/staging/BlockingThreadPoolExecutorService.java



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