tajo-core/tajo-core-pullserver/src/main/java/org/apache/tajo/pullserver/TajoPullServerService.java [248:261]:
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  public synchronized void stop() {
    try {
      accepted.close().awaitUninterruptibly(10, TimeUnit.SECONDS);
      ServerBootstrap bootstrap = new ServerBootstrap(selector);
      bootstrap.releaseExternalResources();
      pipelineFact.destroy();

      localFS.close();
    } catch (Throwable t) {
      LOG.error(t);
    } finally {
      super.stop();
    }
  }
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tajo-core/tajo-core-pullserver/src/main/java/org/apache/tajo/pullserver/PullServerAuxService.java [261:274]:
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  public synchronized void stop() {
    try {
      accepted.close().awaitUninterruptibly(10, TimeUnit.SECONDS);
      ServerBootstrap bootstrap = new ServerBootstrap(selector);
      bootstrap.releaseExternalResources();
      pipelineFact.destroy();

      localFS.close();
    } catch (Throwable t) {
      LOG.error(t);
    } finally {
      super.stop();
    }
  }
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