hadoop-hdfs-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7276) Limit the number of byte arrays used by DFSOutputStream
Date Sat, 01 Nov 2014 18:31:34 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7276?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14193332#comment-14193332
] 

Hudson commented on HDFS-7276:
------------------------------

FAILURE: Integrated in Hadoop-trunk-Commit #6421 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/6421/])
HDFS-7276. Limit the number of byte arrays used by DFSOutputStream and provide a mechanism
for recycling arrays. (szetszwo: rev 36ccf097a95eae0761de7b657752e4808a86c094)
* hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
* hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/util/TestByteArrayManager.java
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/util/ByteArrayManager.java
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/ClientContext.java
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSClient.java
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSOutputStream.java
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSConfigKeys.java


> Limit the number of byte arrays used by DFSOutputStream
> -------------------------------------------------------
>
>                 Key: HDFS-7276
>                 URL: https://issues.apache.org/jira/browse/HDFS-7276
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: hdfs-client
>            Reporter: Tsz Wo Nicholas Sze
>            Assignee: Tsz Wo Nicholas Sze
>         Attachments: h7276_20141021.patch, h7276_20141022.patch, h7276_20141023.patch,
h7276_20141024.patch, h7276_20141027.patch, h7276_20141027b.patch, h7276_20141028.patch, h7276_20141029.patch,
h7276_20141029b.patch, h7276_20141030.patch, h7276_20141031.patch
>
>
> When there are a lot of DFSOutputStream's writing concurrently, the number of outstanding
packets could be large.  The byte arrays created by those packets could occupy a lot of memory.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message