The shutdown hook is triggered when the app is shutdown. Since Flume does not shutdown by itself, some other external process must have sent it a SIGTERM (in a SIGKILL case, the shutdown hook won't execute).
On Sat, Sep 20, 2014 at 7:20 PM, terreyshih <[email protected]> wrote: > Yes, I have increased to 1G. I have also started the jmx remote > monitoring on the jvm which I don’t see any issue. > > Do you know when the shut down hook kicks in ? (under what conditions ?) > > thx > > On Sep 20, 2014, at 7:01 PM, Sharninder <[email protected]> wrote: > > Have you increased the JVM heap size or running with the default 20M only? > > -- > Sharninder > > On 21-Sep-2014, at 3:08 am, terreyshih <[email protected]> wrote: > > BTW, no exceptions are thrown. It just started the agent-shutdown-hook. > > thx > > On Sep 20, 2014, at 2:33 PM, terreyshih <[email protected]> wrote: > > Hi, > > I am having a lot of difficulty trying to debug an issue. The flume > server stops working after a few hours and the JVM shuts down. The snippet > of the message I got in the log starts with following: > > > 20 Sep 2014 12:24:10,899 DEBUG [New I/O worker #9] > (org.hbase.async.RegionClient.decode:1349) - ------------------<< LEAVING > DECODE <<------------------ time elapsed: 75us > 20 Sep 2014 12:24:19,942 INFO [agent-shutdown-hook] > (org.apache.flume.lifecycle.LifecycleSupervisor.stop:79) - Stopping > lifecycle supervisor 13 > 20 Sep 2014 12:24:19,943 INFO [agent-shutdown-hook] > (org.apache.flume.instrumentation.MonitoredCounterGroup.stop:149) - > Component type: CHANNEL, name: myChannelC stopped > > > From there it starts to shut down all the channels and eventually the JVM > shuts down. > > I am running the agent in debug mode and I can see my data coming in > correctly for a couple of hours and the snippet shows, flume enters the > “LEAVING DECODE” section of the flume debug engine. I am writing the data > to HBase sinks by using AsycnHBase. > > I would appreciate it if someone can help me with this. This is > reproducible around every 2 hours. > > When does the agent-shutdown-hook gets triggered ? > > thanks > > > >
