This is solved in Hadoop 3. So stay tuned

Best,

On Feb 2, 2018 6:26 AM, "李立伟" <hilili...@gmail.com> wrote:

> Hi:
>       It's my understanding that HDFS write  operation is not considered
> completd until all of the replicas have been successfully written.If so,
> does the replication factor affect the write latency? the mapreduce\spark
> task will be affected?
>       is there the way to set HDFS write the first replica synchronously
> and return ,the others in an asynchronous.
>       Thanks in advance.
>
>
>

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