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From "Paul Rogers (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DRILL-5874) NPE in AnonWebUserConnection.cleanupSession()
Date Thu, 12 Oct 2017 23:34:00 GMT
Paul Rogers created DRILL-5874:

             Summary: NPE in AnonWebUserConnection.cleanupSession()
                 Key: DRILL-5874
                 URL: https://issues.apache.org/jira/browse/DRILL-5874
             Project: Apache Drill
          Issue Type: Bug
    Affects Versions: 1.12.0
            Reporter: Paul Rogers

When debugging another issue, I tried to use the Web UI to run the example query:

The query failed with this error:

Debugging, the problem appears to be deep inside {{AnonWebUserConnection.cleanupSession()}}:

package io.netty.channel;

public class DefaultChannelPromise ...
    protected EventExecutor executor() {
        EventExecutor e = super.executor();
        if (e == null) {
            return channel().eventLoop();
        } else {
            return e;

In the above, {{channel()}} is null. the {{channel}} field is also null.

This may indicate that some part of the Web UI was not set up correctly. This is a recent
change, as this code worked several days ago.

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