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https://issues.apache.org/jira/browse/HDFS-5043?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13725274#comment-13725274
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Hudson commented on HDFS-5043:
------------------------------
SUCCESS: Integrated in Hadoop-Mapreduce-trunk #1504 (See
[https://builds.apache.org/job/Hadoop-Mapreduce-trunk/1504/])
HDFS-5043. For HdfsFileStatus, set default value of childrenNum to -1 instead
of 0 to avoid confusing applications. Contributed by Brandon Li (brandonli:
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1508694)
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
*
/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocolPB/PBHelper.java
*
/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/web/JsonUtil.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/proto/hdfs.proto
> For HdfsFileStatus, set default value of childrenNum to -1 instead of 0 to
> avoid confusing applications
> -------------------------------------------------------------------------------------------------------
>
> Key: HDFS-5043
> URL: https://issues.apache.org/jira/browse/HDFS-5043
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 3.0.0
> Reporter: Brandon Li
> Assignee: Brandon Li
> Fix For: 3.0.0, 2.3.0
>
> Attachments: HDFS-5043.patch, HDFS-5043.patch.2
>
>
> Per discussion in HDFS-4772, default value 0 can confuse application since it
> can't tell that childNum is not supported by the server or the directory has
> no child.
> Use -1 instead to avoid this confusion.
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