Xiao Chen created HADOOP-15507: ---------------------------------- Summary: 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
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. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: common-dev-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-dev-h...@hadoop.apache.org