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https://issues.apache.org/jira/browse/HDFS-8117?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14493933#comment-14493933
]
Hudson commented on HDFS-8117:
------------------------------
FAILURE: Integrated in Hadoop-Yarn-trunk-Java8 #163 (See
[https://builds.apache.org/job/Hadoop-Yarn-trunk-Java8/163/])
HDFS-8117. More accurate verification in SimulatedFSDataset: replace
DEFAULT_DATABYTE with patterned data. Contributed by Zhe Zhang. (wang: rev
d60e22152ac098da103fd37fb81f8758e68d1efa)
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestSimulatedFSDataset.java
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestSmallBlock.java
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/SimulatedFSDataset.java
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestFileAppend.java
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/DFSTestUtil.java
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestPread.java
* hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
> More accurate verification in SimulatedFSDataset: replace DEFAULT_DATABYTE
> with patterned data
> ----------------------------------------------------------------------------------------------
>
> Key: HDFS-8117
> URL: https://issues.apache.org/jira/browse/HDFS-8117
> Project: Hadoop HDFS
> Issue Type: Improvement
> Affects Versions: 2.6.0
> Reporter: Zhe Zhang
> Assignee: Zhe Zhang
> Fix For: 3.0.0
>
> Attachments: HDFS-8117-branch2.patch, HDFS-8117.000.patch,
> HDFS-8117.001.patch, HDFS-8117.002.patch, HDFS-8117.003.patch
>
>
> Currently {{SimulatedFSDataset}} uses a single {{DEFAULT_DATABYTE}} to
> simulate _all_ block content. This is not accurate because the return of this
> byte just means the read request has hit an arbitrary position in an
> arbitrary simulated block.
> This JIRA aims to improve it with a more accurate verification. When position
> {{p}} of a simulated block {{b}} is accessed, the returned byte is {{b}}'s
> block ID plus {{p}}, moduled by the max value of a byte.
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