[jira] [Created] (HDFS-14792) [SBN read] StanbyNode does not come out of safemode while adding new blocks.

["Konstantin Shvachko (Jira)" <ji...@apache.org>]

Konstantin Shvachko created HDFS-14792:
------------------------------------------

             Summary: [SBN read] StanbyNode does not come out of safemode while adding new blocks.
                 Key: HDFS-14792
                 URL: https://issues.apache.org/jira/browse/HDFS-14792
             Project: Hadoop HDFS
          Issue Type: Sub-task
          Components: namenode
    Affects Versions: 2.10.0
            Reporter: Konstantin Shvachko


During startup StandbyNode reports that it needs additional X blocks to reach the threshold 1.0000. Where X is changing up and down.
This is because with fast tailing SBN adds new blocks from edits while DNs have not reported replicas yet. Being in SafeMode SBN counts new blocks towards the threshold and can stays in SafeMode for a long time.
By design, the purpose of startup SafeMode is to disallow modifications of the namespace and blocks map until all DNs replicas are reported.



--
This message was sent by Atlassian Jira
(v8.3.2#803003)

---------------------------------------------------------------------
To unsubscribe, e-mail: hdfs-dev-unsubscribe@hadoop.apache.org
For additional commands, e-mail: hdfs-dev-help@hadoop.apache.org