[ https://issues.apache.org/jira/browse/HDFS-14187?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Kitti Nanasi updated HDFS-14187: -------------------------------- Status: Patch Available (was: Open) > Make warning message more clear when there are not enough data nodes for EC > write > --------------------------------------------------------------------------------- > > Key: HDFS-14187 > URL: https://issues.apache.org/jira/browse/HDFS-14187 > Project: Hadoop HDFS > Issue Type: Improvement > Components: erasure-coding > Affects Versions: 3.1.1 > Reporter: Kitti Nanasi > Assignee: Kitti Nanasi > Priority: Major > Attachments: HDFS-14187.001.patch > > > When setting an erasure coding policy for which there are not enough racks or > data nodes, write will fail with the following message: > {code:java} > [root@oks-upgrade6727-1 ~]# sudo -u systest hdfs dfs -mkdir > /user/systest/testdir > [root@oks-upgrade6727-1 ~]# sudo -u hdfs hdfs ec -setPolicy -path > /user/systest/testdir > Set default erasure coding policy on /user/systest/testdir > [root@oks-upgrade6727-1 ~]# sudo -u systest hdfs dfs -put /tmp/file1 > /user/systest/testdir > 18/11/12 05:41:26 WARN hdfs.DFSOutputStream: Cannot allocate parity > block(index=3, policy=RS-3-2-1024k). Not enough datanodes? Exclude nodes=[] > 18/11/12 05:41:26 WARN hdfs.DFSOutputStream: Cannot allocate parity > block(index=4, policy=RS-3-2-1024k). Not enough datanodes? Exclude nodes=[] > 18/11/12 05:41:26 WARN hdfs.DFSOutputStream: Block group <1> failed to write > 2 blocks. It's at high risk of losing data. > {code} > I suggest to log a more descriptive message suggesting to use hdfs ec > -verifyCluster command to verify the cluster setup against the ec policies. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org