[
https://issues.apache.org/jira/browse/HDFS-9261?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14975721#comment-14975721
]
Uma Maheswara Rao G commented on HDFS-9261:
-------------------------------------------
Hi Rakesh, Thanks for working on it. Do we have existing tests going
through/covering this scenario? if no, could you please add one?
> Erasure Coding: Skip encoding the data cells if all the parity data streamers
> are failed for the current block group
> --------------------------------------------------------------------------------------------------------------------
>
> Key: HDFS-9261
> URL: https://issues.apache.org/jira/browse/HDFS-9261
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Rakesh R
> Assignee: Rakesh R
> Priority: Minor
> Attachments: HDFS-9261-00.patch
>
>
> {{DFSStripedOutputStream}} will continue writing with minimum number
> (dataBlockNum) of live datanodes. It won't replace the failed datanodes
> immediately for the current block group. Consider a case where all the parity
> data streamers are failed, now it is unnecessary to encode the data block
> cells and generate the parity data. This is a corner case where it can skip
> {{writeParityCells()}} step.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
