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From Ralph Goers <ralph.go...@dslextreme.com>
Subject Re: flume dying on InterruptException (nanos)
Date Wed, 19 Oct 2011 15:13:20 GMT
We saw this problem when it was taking more than 1 second for a response from writing to Cassandra
(our back end).  A single long response will kill the collector.  We had to revert back to
the version of Flume that uses syncrhonization instead of read/write locking to get around
this.

Ralph

On Oct 18, 2011, at 1:55 PM, AD wrote:

> Hello,
> 
>  My collector keeps dying with the following error, is this a known issue? Any idea how
to prevent or find out what is causing it ?  is format("%{nanos}" an issue ?
> 
> 2011-10-17 23:16:33,957 INFO com.cloudera.flume.core.connector.DirectDriver: Connector
logicalNode flume1-18 exited with error: null
> java.lang.InterruptedException
> 	at java.util.concurrent.locks.AbstractQueuedSynchronizer.tryAcquireNanos(AbstractQueuedSynchronizer.java:1246)
> 	at java.util.concurrent.locks.ReentrantReadWriteLock$WriteLock.tryLock(ReentrantReadWriteLock.java:1009)
> 	at com.cloudera.flume.handlers.rolling.RollSink.close(RollSink.java:296)
> 	at com.cloudera.flume.core.EventSinkDecorator.close(EventSinkDecorator.java:67)
> 	at com.cloudera.flume.core.EventSinkDecorator.close(EventSinkDecorator.java:67)
> 
> 
> source:  collectorSource("35853")
> sink:  regexAll("^([0-9.]+)\\s\\[([0-9a-zA-z\\/: -]+)\\]\\s([A-Z]+)\\s([a-zA-Z0-9.:]+)\\s\"([^\\s]+)\"\\s([0-9]+)\\s([0-9]+)\\s\"([^\\s]+)\"\\s\"([a-zA-Z0-9\\/()_
-;]+)\"\\s(hit|miss)\\s([0-9.]+)","hbase_remote_host","hbase_request_date","hbase_request_method","hbase_request_host","hbase_request_url","hbase_response_status","hbase_response_bytes","hbase_referrer","hbase_user_agent","hbase_cache_hitmiss","hbase_origin_firstbyte")
format("%{nanos}:") split(":", 0, "hbase_") format("%{node}:") split(":",0,"hbase_node") digest("MD5","hbase_md5")
collector(10000) { attr2hbase("apache_logs","f1","","hbase_") }


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