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  1. ZooKeeper
  2. ZOOKEEPER-4804

Use daemon threads for Netty client

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Details

    • Bug
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • 3.8.3
    • 3.10.0, 3.9.3
    • None

    Description

      When the Netty client is used, the Java process hangs on System.exit if there is an open Zookeeper connection.

      This is caused by the non-daemon threads created by Netty.

      Exiting without closing the connection is not a good practice, but this hang does not happen with the NIO client, and I think ZK should behave the same regardless of the client implementation used.

      The Netty ThreadFactory implementation is configurable, it shouldn't be too hard make sure that daemon threads are created.

      Attachments

        Issue Links

          causes

          Bug - A problem which impairs or prevents the functions of the product. HBASE-28353 Close HBase connection on implicit exit from HBase shell

          • Major - Major loss of function.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. PHOENIX-7223 Make Sure Tools Always Close HBase Connections on Exit

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Resolved
          is related to

          Bug - A problem which impairs or prevents the functions of the product. HBASE-28448 CompressionTest hangs when run over a Ozone ofs path

          • Major - Major loss of function.
          • Resolved
          links to

          Web Link GitHub Pull Request #2142

          Web Link GitHub Pull Request #2150

          Activity

            People

              stoty Istvan Toth
              stoty Istvan Toth
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