Pig
  1. Pig
  2. PIG-3446 Umbrella jira for Pig on Tez
  3. PIG-3780

Tez mini cluster tests run for a very long time with TezSession reuse on

    Details

    • Type: Sub-task Sub-task
    • Status: Closed
    • Priority: Major Major
    • Resolution: Fixed
    • Affects Version/s: tez-branch
    • Fix Version/s: tez-branch
    • Component/s: tez
    • Labels:
      None

      Description

      In the current tez branch, mini cluster unit tests are very slow. The reason is as follows:

      • TezSession reuse is by default on.
      • Each test case runs, and it waits for Tez AM to terminate.
      • After Tez AM times out (usually after several minutes), another test case runs.

      Two questions that I have are:

      1. Why doesn't TezSession reuse work in mini cluster?
      2. Why is TezSession reuse not disabled in some tests (e.g. TestAccumulator) where we explicitly set "tez.session.reuse" to false?

      As for #2, I realized that "tez.session.reuse" was never set in the properties object that is passed to PigServer. I am going to upload a patch that fixes this problem in this jira.

      As for #1, I don't have an answer yet. But I think we can fix this in a separate jira once we get Tez unit tests working again.

      1. PIG-3780-2.patch
        34 kB
        Cheolsoo Park
      2. PIG-3780-1.patch
        61 kB
        Cheolsoo Park

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          • Assignee:
            Cheolsoo Park
            Reporter:
            Cheolsoo Park
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            Dates

            • Created:
              Updated:
              Resolved:

              Development