If there is a failure in my php code in one of the shell bolts exec process,
the error isn't obvious in all the cases when the topology comes up /handles
the request.
Only in certain types of failures I see my exceptions getting printed but for
some, it just doesnt do anything.
here is a simple example:
this is part of my code in my shell_bolt.php under multilang/resources:
try {
.....
.....
$fh = fopen("/tmp/pytrace.txt", 'a') or die("Can't open file");
fwrite($fh, "hello world");
fwrite($fh,print_r($tuple->values));
fclose($fh);
$this->emit(array($tuple->values[0], $word));
} catch (Exception $e) {
throw new Exception("exception " . $e);
}
the problem area is print_r() function. If I remove print_r() and just print
$tuple->values, everything works fine and the shell bolt emits the word. With
print_r, it just hangs and my drpc calls timeout .
What is the best way to figure out what is going on with the shell bolt exec
process??
thanks!!
On , adiya n <[email protected]> wrote:
Should have looked at the wiki/links better. Troubleshooting guide helped.
thanks!
On Wednesday, June 4, 2014 11:29 PM, adiya n <[email protected]> wrote:
Hello all,
What do negative id values mean in the logs? Does that indicate any error?
I got these while running a local topology. Also, is there any good
documentation about understanding the logs. Most of it is self-explanatory from
the log messages but if there is any existing documentation somewhere, that
will really help.
5433 [Thread-19] INFO backtype.storm.daemon.executor - Processing received
message source: prepare-request:7, stream: default, id:
{-4212877050522192524=6354306792350206104}, [3323165896464350833, 33]
Tuple received by bolt is source: prepare-request:7, stream: default, id:
{-4212877050522192524=6354306792350206104}, [3323165896464350833, 33]
5433 [Thread-10] INFO backtype.storm.daemon.worker - Worker
445b9038-ac6f-4629-a86f-82cd5eecf0e3 for storm drpc-demo-1-1401943429 on
9b5a127d-1a02-4362-883e-f5193c6f7a92:4 has finished loading
5434 [Thread-36] INFO backtype.storm.daemon.executor - Processing received
message source: spout:8, stream: __ack_init, id: {}, [-4212877050522192524
-4291234877071288404 8]
5434 [Thread-19] INFO backtype.storm.daemon.task - Emitting: bolt0 default
[3323165896464350833, MyBolt is emitting: ]
5434 [Thread-36] INFO backtype.storm.daemon.executor - Processing received
message source: prepare-request:7, stream: __ack_ack, id: {},
[-4212877050522192524 340043085440436800]
5435 [Thread-19]
INFO backtype.storm.daemon.task - Emitting: bolt0 __ack_ack
[-4212877050522192524 5906040704921991109]
thanks
Aiya
