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Wilfred Spiegelenburg commented on YARN-6042: --------------------------------------------- Thank you for the update, we discussed it offline and the change looks good now. I have one minor nit in the text update we should have in FSAppAttempt: _creating_ should be _create_ in the debug text _LOG.debug("Couldn't creating reservation for app: " + getName()_ > Fairscheduler: Dump scheduler state in log > ------------------------------------------ > > Key: YARN-6042 > URL: https://issues.apache.org/jira/browse/YARN-6042 > Project: Hadoop YARN > Issue Type: Improvement > Components: fairscheduler > Reporter: Yufei Gu > Assignee: Yufei Gu > Attachments: YARN-6042.001.patch, YARN-6042.002.patch, > YARN-6042.003.patch, YARN-6042.004.patch, YARN-6042.005.patch > > > To improve the debugging of scheduler issues it would be a big improvement to > be able to dump the scheduler state into a log on request. > The Dump the scheduler state at a point in time would allow debugging of a > scheduler that is not hung (deadlocked) but also not assigning containers. > Currently we do not have a proper overview of what state the scheduler and > the queues are in and we have to make assumptions or guess > The scheduler and queue state needed would include (not exhaustive): > - instantaneous and steady fair share (app / queue) > - AM share and resources > - weight > - app demand > - application run state (runnable/non runnable) > - last time at fair/min share -- This message was sent by Atlassian JIRA (v6.3.15#6346) --------------------------------------------------------------------- To unsubscribe, e-mail: yarn-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: yarn-issues-h...@hadoop.apache.org