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Hudson commented on HDFS-11738: ------------------------------- SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #12220 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/12220/]) HDFS-11738. Hedged pread takes more time when block moved from initial (jzhuge: rev b6bfb2fcb2391d51b8de97c01c1290880779132e) * (edit) hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/DFSClientFaultInjector.java * (edit) hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestPread.java * (edit) hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/DFSInputStream.java > Hedged pread takes more time when block moved from initial locations > -------------------------------------------------------------------- > > Key: HDFS-11738 > URL: https://issues.apache.org/jira/browse/HDFS-11738 > Project: Hadoop HDFS > Issue Type: Bug > Components: hdfs-client > Reporter: Vinayakumar B > Assignee: Vinayakumar B > Fix For: 3.0.0-beta1 > > Attachments: HDFS-11738-01.patch, HDFS-11738-02.patch, > HDFS-11738-03.patch, HDFS-11738-04.patch, HDFS-11738-05.patch > > > Scenario : > Same as HDFS-11708. > During Hedge read, > 1. First two locations fails to read the data in hedged mode. > 2. chooseData refetches locations and adds a future to read from DN3. > 3. after adding future to DN3, main thread goes for refetching locations in > loop and stucks there till all 3 retries to fetch locations exhausted, which > consumes ~20 seconds with exponential retry time. -- This message was sent by Atlassian JIRA (v6.4.14#64029) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org