[ACCUMULO-3082] MAC processes still hang around when termination doesn't finish in 30s

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Cannot Reproduce
• Component/s: mini
• Assignee: Unassigned
• Reporter: Josh Elser
• Created: 25/Aug/14 05:29
• Updated: 23/Apr/19 21:12
• Resolved: 23/Apr/19 21:12

Description

I added some support in ACCUMULO-2764 which executes the Process.destroy() and Process.waitFor() that we call to stop the MAC processes with a timeout to prevent the Maven build from hanging indefinitely.

However, when we hit the timeout...

2014-08-24 04:49:36,370 [impl.MiniAccumuloClusterImpl] WARN : Master did not fully stop after 30 seconds
java.util.concurrent.TimeoutException
        at java.util.concurrent.FutureTask.get(FutureTask.java:201)
        at org.apache.accumulo.minicluster.impl.MiniAccumuloClusterImpl.stopProcessWithTimeout(MiniAccumuloClusterImpl.java:755)
        at org.apache.accumulo.minicluster.impl.MiniAccumuloClusterImpl.stop(MiniAccumuloClusterImpl.java:645)
        at org.apache.accumulo.minicluster.impl.MiniAccumuloClusterGCTest.tea

The processes will hang around on the host system.

Need to get:

1. Better diagnosis of why exactly the destroy and waitFor doesn't return
2. (try to?) Guarantee 100% cleanup of processes when MiniAccumuloCluster.stop() is called.