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Posted to dev@hbase.apache.org by Jan Kunigk <ja...@gmail.com> on 2017/09/22 22:15:41 UTC

support for zero copy reads

Hi, does HBase take advantage of HDFS zero copy reads?
My idea is that RegionServers could potentially mmap everything they need
via the HDFS ZCR API and pass SKIP_CHECKSUMS when reading files via mmap,
since HBase supports its own checksumming on the HFile level... correct?

Could be completely wrong... Hence the open question.

J