Vinayakumar B created HDFS-11708: ------------------------------------ Summary: positional read will fail if replicas moved to different DNs after stream is opened Key: HDFS-11708 URL: https://issues.apache.org/jira/browse/HDFS-11708 Project: Hadoop HDFS Issue Type: Bug Components: hdfs-client Affects Versions: 2.7.3 Reporter: Vinayakumar B Assignee: Vinayakumar B Priority: Critical
Scenario: 1. File was written to DN1, DN2 with RF=2 2. File stream opened to read and kept. Block Locations are [DN1,DN2] 3. One of the replica (DN2) moved to another datanode (DN3) due to datanode dead/balancing/etc. 4. Latest block locations in NameNode will be DN1 and DN3. 5. DN1 went down, but not yet detected as dead in NameNode. 6. Client start reading using positional read api "read(pos, buf[], offset, length)" -- This message was sent by Atlassian JIRA (v6.3.15#6346) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-dev-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-dev-h...@hadoop.apache.org