Re: If primary replica is unresponsive, hsync() hangs

Thanks for finding the issue Wei-Chiu. I agree hsync should be handling DN failure similarly as write-pipeline recovery, as you stated. If it's not doing that, it should be fixed. --Yongjun On Mon, Sep 11, 2017 at 10:53 AM, Wei-Chiu Chuang wrote: > Hello my dear HDFS dev

If primary replica is unresponsive, hsync() hangs

Hello my dear HDFS dev colleagues, It appears that when a dfs client writes and hsync(), and if the primary replica (that is, the first DataNode in the write pipeline) is unresponsive to the hsync() request, the hsync() would wait at DataStreamer#waitForAckedSeqno(). In one scenario, we saw this