Rishir Shroff created HBASE-7408:
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Summary: Make compaction to use pread instead of sequential read
Key: HBASE-7408
URL: https://issues.apache.org/jira/browse/HBASE-7408
Project: HBase
Issue Type: Improvement
Reporter: Rishir Shroff
Priority: Minor
As we discovered lately, HFile compactions use sequential reads to fetch
blocks. It cause unwanted streaming of data from HDFS to region servers when
there is a cache hit. Lets change to use preads to reduce iops on disks.
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