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https://issues.apache.org/jira/browse/HDFS-9252?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15009530#comment-15009530
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Hudson commented on HDFS-9252:
------------------------------

SUCCESS: Integrated in Hadoop-Yarn-trunk-Java8 #688 (See 
[https://builds.apache.org/job/Hadoop-Yarn-trunk-Java8/688/])
HDFS-9252. Change TestFileTruncate to use FsDatasetTestUtils to get (cmccabe: 
rev dfbde3fc511495ac998f07d674a87355de75fc04)
* 
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/FsDatasetTestUtils.java
* 
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsDatasetUtil.java
* 
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsDatasetImplTestUtils.java
* hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
* 
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestFileTruncate.java


> Change TestFileTruncate to use FsDatasetTestUtils to get block file size and 
> genstamp.
> --------------------------------------------------------------------------------------
>
>                 Key: HDFS-9252
>                 URL: https://issues.apache.org/jira/browse/HDFS-9252
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>    Affects Versions: 2.7.1
>            Reporter: Lei (Eddy) Xu
>            Assignee: Lei (Eddy) Xu
>             Fix For: 2.8.0
>
>         Attachments: HDFS-9252.00.patch, HDFS-9252.01.patch, 
> HDFS-9252.02.patch, HDFS-9252.03.patch, HDFS-9252.04.patch
>
>
> {{TestFileTruncate}} verifies block size and genstamp by directly accessing 
> the  local filesystem, e.g.:
> {code}
> assertTrue(cluster.getBlockMetadataFile(dn0,
>    newBlock.getBlock()).getName().endsWith(
>    newBlock.getBlock().getGenerationStamp() + ".meta"));
> {code}
> Lets abstract the fsdataset-special logic behind FsDatasetTestUtils.



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