[ACCUMULO-2848] TServerUtil tries to access nonexistent member in Thrift TServer

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Incomplete
• Affects Version/s: 1.5.1, 1.6.0
• Component/s: tserver
• Assignee: Unassigned
• Reporter: Josh Elser
• Created: 30/May/14 17:34
• Updated: 03/Sep/21 22:15
• Resolved: 03/Sep/21 22:15

Description

In trying to get the tserver to shut down cleanly for ACCUMULO-2739, I noticed:

  public static void stopTServer(TServer s) {
    if (s == null)
      return;
    s.stop();
    try {
      Field f = s.getClass().getDeclaredField("executorService_");
      f.setAccessible(true);
      ExecutorService es = (ExecutorService) f.get(s);
      es.shutdownNow();
    } catch (Exception e) {
      TServerUtils.log.error("Unable to call shutdownNow", e);
    }
  }

In Thrift 0.9.0, the executorService_ doesn't appear to exist anymore on the implementation of TServer we're using.

2014-05-30 13:17:13,844 [util.TServerUtils] ERROR: Unable to call shutdownNow
java.lang.NoSuchFieldException: executorService_
	at java.lang.Class.getDeclaredField(Class.java:1948)
	at org.apache.accumulo.server.util.TServerUtils.stopTServer(TServerUtils.java:367)
	at org.apache.accumulo.tserver.TabletServer.run(TabletServer.java:3277)
	at org.apache.accumulo.tserver.TabletServer.main(TabletServer.java:3668)