[ https://issues.apache.org/jira/browse/HDFS-9373?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15060444#comment-15060444 ]
Zhe Zhang commented on HDFS-9373: --------------------------------- Thanks Bo. Could you address the checkstyle issue by adding a comma on line 254? +1 pending that. > Show friendly information to user when client succeeds the writing with some > failed streamers > --------------------------------------------------------------------------------------------- > > Key: HDFS-9373 > URL: https://issues.apache.org/jira/browse/HDFS-9373 > Project: Hadoop HDFS > Issue Type: Sub-task > Components: erasure-coding > Affects Versions: 3.0.0 > Reporter: Li Bo > Assignee: Li Bo > Attachments: HDFS-9373-001.patch, HDFS-9373-002.patch > > > When not more than PARITY_NUM streamers fail for a block group, the client > may still succeed to write the data. But several exceptions are thrown to > user and user has to check the reasons. The friendly way is just inform user > that some streamers fail when writing a block group. It’s not necessary to > show the details of exceptions because a small number of stream failures is > not vital to the client writing. > When only DATA_NUM streamers succeed, the block group is in a high risk > because the corrupt of any block will cause all the six blocks' data lost. We > should give obvious warning to user when this occurs. -- This message was sent by Atlassian JIRA (v6.3.4#6332)