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https://issues.apache.org/jira/browse/HADOOP-15507?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16501278#comment-16501278
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Hudson commented on HADOOP-15507:
---------------------------------
SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #14362 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/14362/])
HADOOP-15507. Add MapReduce counters about EC bytes read. (xiao: rev
6d5e87aec2f615ed265dc495873bf53ee7d2ace2)
* (edit)
hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/DFSClient.java
* (edit)
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/Task.java
* (edit)
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/FileSystemCounter.java
* (edit)
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/FileSystemStorageStatistics.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/DFSInputStream.java
* (edit)
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/resources/org/apache/hadoop/mapreduce/FileSystemCounter.properties
* (edit)
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/FileSystem.java
* (edit)
hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/fs/TestFileSystemStorageStatistics.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/ReaderStrategy.java
> Add MapReduce counters about EC bytes read
> ------------------------------------------
>
> Key: HADOOP-15507
> URL: https://issues.apache.org/jira/browse/HADOOP-15507
> Project: Hadoop Common
> Issue Type: Improvement
> Reporter: Xiao Chen
> Assignee: Xiao Chen
> Priority: Major
> Fix For: 3.2.0
>
> Attachments: HADOOP-15507.01.patch, image-2018-05-31-15-29-45-729.png
>
>
> HDFS has added Erasure Coding support in HDFS-7285. There are HDFS level
> [ReadStatistics|https://github.com/apache/hadoop/blob/trunk/hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/ReadStatistics.java]
> so from DFSClient we can know how much reads are EC/replication.
> In order for users to have a better view of how much of their workload is
> impacted by EC, we can expose EC read bytes to File System Counters, and to
> MapReduce's job counters. This way, end users can tell from MR jobs directly.
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