[ https://issues.apache.org/jira/browse/HDFS-5946?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Vinod Kumar Vavilapalli updated HDFS-5946: ------------------------------------------ Target Version/s: (was: 2.8.0) Not much going on here for a long time, dropping from 2.8.0. Not putting any target-version either anymore, let's target this depending on when there is patch activity. > 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