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https://issues.apache.org/jira/browse/HDFS-9373?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Li Bo updated HDFS-9373:
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Description:
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.
was: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.
> 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
> Reporter: Li Bo
> Assignee: Li Bo
>
> 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.
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