Maja Kabiljo created GIRAPH-1036:
------------------------------------
Summary: Allow mappers to fail early on exceptions
Key: GIRAPH-1036
URL: https://issues.apache.org/jira/browse/GIRAPH-1036
Project: Giraph
Issue Type: Bug
Reporter: Maja Kabiljo
Assignee: Maja Kabiljo
Often when something fails in a mapper we see it stuck until its timeout
passes. Digging through this issue I found two root causes:
- Many threads we are creating were not daemon, preventing process to exit,
only main thread should be daemon
- When calling submit on ExecutorService, exceptions are not propagated back to
the caller, unless get is called on the future. In
ProgressableUtils.getResultsWithNCallables we were calling get on one by one
future, causing us to have to wait for previous futures to finish before
getting exception which happened in later one.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
