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Sangjin Lee commented on HDFS-5946: ----------------------------------- There has been no movement on this for a while. We'll need to move it out of scope for 2.8.0 soon. Let me know if you disagree. > Webhdfs DN choosing code is flawed > ---------------------------------- > > Key: HDFS-5946 > URL: https://issues.apache.org/jira/browse/HDFS-5946 > Project: Hadoop HDFS > Issue Type: Bug > Components: namenode, webhdfs > Affects Versions: 2.4.0, 3.0.0-alpha1 > Reporter: Daryn Sharp > Priority: Critical > > HDFS-5891 improved the performance of redirecting webhdfs clients to a DN. > Instead of attempting a connection with a 1-minute timeout, the NN skips > decommissioned nodes. > The logic appears flawed. It finds the index of the first decommissioned > node, if any, then: > * Throws an exception if index = 0, even if other nodes later in the list are > not decommissioned. > * Else picks a random node prior to the index. Let's say there are 10 > replicas, 2nd location is decommissioned. All clients will be redirected to > the first location even though there are 8 other valid locations. -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org