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  1. Ignite
  2. IGNITE-12840

Leaking H2 internals when querying from pyignite

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Critical
    • Resolution: Duplicate
    • Affects Version/s: 2.8
    • Fix Version/s: None
    • Component/s: clients, python
    • Labels:
      None

      Description

      I am sharing a slightly modified reproducer from userlist.

      To run:

      Start a node (with JVM_OPTS=-Xmx512m to see it most clearly).
      Run a .sql file with sqlline (!run)
      python3 test_insert_in_cache.py
      in parallel terminal: python3 read_cache_insert_update_table.py

      Then you should observe slowing down and long GC pauses on server node. jmap will collect ever-increasing heap dumps.

        Attachments

        1. test_insert_in_cache.py
          0.9 kB
          Ilya Kasnacheev
        2. TEST_TABLE.sql
          0.7 kB
          Ilya Kasnacheev
        3. read_cache_insert_update_table.py
          2 kB
          Ilya Kasnacheev

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              • Assignee:
                Unassigned
                Reporter:
                ilyak Ilya Kasnacheev
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                • Created:
                  Updated:
                  Resolved: