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Posted to common-user@hadoop.apache.org by Xiao Yu <cu...@gmail.com> on 2013/02/01 04:15:10 UTC

What happens when a block is being invalidated/deleted on the DataNode when it is being read?

Hi, all

I am wondering if this situation could happen: a block is being
invalidated/deleted on a DataNode(by the NameNode, for example, to delete a
over-replicated block) while it is also concurrently being read (by some
clients). If this could happen, how does hdfs handle this issue?

Thank you very much.

Xiao Yu