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Wei-Chiu Chuang commented on HBASE-21946: ----------------------------------------- I have a patch that uses DFSInputStream.hasCapability() API to detect which read() API to use. Using this approach, I can come up with a solution that is compatible with any Hadoop version >= 2.9.1. [~openinx] can i take over this jira? > Replace the byte[] pread by ByteBuffer pread in HFileBlock reading once > HDFS-3246 prepared > ------------------------------------------------------------------------------------------ > > Key: HBASE-21946 > URL: https://issues.apache.org/jira/browse/HBASE-21946 > Project: HBase > Issue Type: Improvement > Components: Offheaping > Reporter: Zheng Hu > Assignee: Zheng Hu > Priority: Critical > Fix For: 2.5.0, 3.0.0-alpha-2 > > Attachments: HBASE-21946.HBASE-21879.v01.patch, > HBASE-21946.HBASE-21879.v02.patch, HBASE-21946.HBASE-21879.v03.patch, > HBASE-21946.HBASE-21879.v04.patch > > > [~stakiar] is working on HDFS-3246, so now we have to keep the byte[] pread > in HFileBlock reading. Once it get resolved, we can upgrade the hadoop > version and do the replacement. > I think it will be a great p999 latency improvement in 100% Get case, anyway > file a issue address this firstly. -- This message was sent by Atlassian Jira (v8.3.4#803005)