stack created HBASE-12410:
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Summary: Zombie hunting tips!
Key: HBASE-12410
URL: https://issues.apache.org/jira/browse/HBASE-12410
Project: HBase
Issue Type: Brainstorming
Reporter: stack
Here are some tips from Mr Charlton Heston (@dima spivak) and World War Z Brad
Pitt ([~apurtell]), famous Zombie killers, on how to figure why tests are
hanging:
bq. Set -Dsurefire.timeout=0 to the mvn command which sets the process timeout
to unlimited.
Above is good for figuring what is sticking around.
bq. When hunting zombies locally you can also set the first part and second
part fork modes to "always" so each test runs in its own VM, then loop the unit
test suite, watch for stragglers, then jstack. Works well because you can be
sure every stack in the dump is relevant for the hung test.
Lets keep this issue open and add tips for tests for nailing those that won't
die.
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