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  1. HBase
  2. HBASE-7408

Make compaction to use pread instead of sequential read

    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Minor
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: None
    • Labels:
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      Description

      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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            • Assignee:
              rshroff Rishit Shroff
              Reporter:
              rshroff Rishit Shroff
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