[ 
https://issues.apache.org/jira/browse/HDFS-8669?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14938347#comment-14938347
 ] 

Hudson commented on HDFS-8669:
------------------------------

FAILURE: Integrated in Hadoop-Mapreduce-trunk #2408 (See 
[https://builds.apache.org/job/Hadoop-Mapreduce-trunk/2408/])
HDFS-8669. Erasure Coding: handle missing internal block locations in (jing9: 
rev b1e6429a6be382c93e894e46f63037819a5608a6)
* 
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestReadStripedFileWithMissingBlocks.java
* 
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/BlockReader.java
* hadoop-hdfs-project/hadoop-hdfs/CHANGES-HDFS-EC-7285.txt
* 
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSStripedInputStream.java
* 
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestWriteReadStripedFile.java
* 
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/util/StripedBlockUtil.java
* 
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/StripedFileTestUtil.java


> Erasure Coding: handle missing internal block locations in 
> DFSStripedInputStream
> --------------------------------------------------------------------------------
>
>                 Key: HDFS-8669
>                 URL: https://issues.apache.org/jira/browse/HDFS-8669
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Jing Zhao
>            Assignee: Jing Zhao
>             Fix For: HDFS-7285
>
>         Attachments: HDFS-8669-HDFS-7285.001.patch, HDFS-8669.000.patch, 
> HDFS-8669.001.patch
>
>
> Currently DFSStripedInputStream assumes we always have complete internal 
> block location information, i.e., we can always get all the DataNodes for a 
> striped block group. In a lot of scenarios the client cannot get complete 
> block location info, e.g., some internal blocks are missing and the NameNode 
> has not finished the recovery yet. We should add functionality to handle 
> missing block locations in DFSStripedInputStream.



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