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  1. IMPALA
  2. IMPALA-5240

Allow configuration of # of disk I/O threads independently for solid-state and spinning disks

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Details

    • Improvement
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • Impala 2.9.0
    • Impala 2.10.0
    • Backend
    • ghx-label-1

    Description

      Currently Impala defaults to 8 threads per SSD and 1 thread per spinning disk. This can be overridden with --num_threads_per_disk, but that sets the thread count independent of disk type. It would be nice to be able to override the two categories separately in anticipation of more exotic configurations with a mix of spinning disks and potentially high-performance SSDs that won't be maxed-out with 8 threads.

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            bikramjeet.vig Bikramjeet Vig
            tarmstrong Tim Armstrong
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