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  1. Hive
  2. HIVE-7926 long-lived daemons for query fragment execution, I/O and caching
  3. HIVE-10132

LLAP: Tez heartbeats are delayed by ~500+ ms due to Hadoop IPC client

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    • Sub-task
    • Status: Open
    • Major
    • Resolution: Unresolved
    • None
    • None
    • llap
    • None

    Description

      HADOOP-11772 has a clearer bug report of the core issue inside hadoop-common.

      Due to the delayed heartbeats reaching the AM, the reducers are losing up-to a couple of seconds for a 60ms (x10 parallel) mapper + 300ms reducer instead of finishing the query in under a second.

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        1. HIVE-10132.NOT.A.patch
          3 kB
          Gopal Vijayaraghavan

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          People

            sseth Siddharth Seth
            gopalv Gopal Vijayaraghavan
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            Dates

              Created:
              Updated: