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https://issues.apache.org/jira/browse/HDFS-11664?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15980679#comment-15980679
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DENG FEI edited comment on HDFS-11664 at 4/24/17 3:18 AM:
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Normally should maintain definite  storage remaining,but if out of control,many 
blocks need to do replication cause of writing minimum replica,althought 
immediatelly delete heavy path and file,the cluster can't recovery for a long 
time.


was (Author: deng fei):
Normally should maintain definite  storage remaining,but if out of control,many 
blocks need to do replication cause of write minimum replica,althought 
immediatelly delete heavy path and file,the cluster can't recovery for a long 
time.

> Invalidate blocks cannot invoke because of replication work slowly while 
> cluster is almost full
> -----------------------------------------------------------------------------------------------
>
>                 Key: HDFS-11664
>                 URL: https://issues.apache.org/jira/browse/HDFS-11664
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: namenode
>    Affects Versions: 2.7.2, 3.0.0-alpha2
>            Reporter: DENG FEI
>         Attachments: HDFS-11664.001.patch
>
>
> Currently invalideBlock is executed after replication, when 'dfs remaining' 
> is not much left and affect block writing, but can not release sufficient 
> storage quickly after did delete, the daemon stuck at computing replication.
> Split replication and invalidation may be better.



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