Hi Sam, this was fixed with a commit late last month: http://bazaar.launchpad.net/~bigdata-charmers/charms/trusty/hdp- hadoop/trunk/revision/30?remember=32
This is the infamous jps problem that plagued big data charms since the openjdk 7u75 update. In your case, namenode-relation-joined *should* have detected that namenode was running and returned before the call to start_namenode(): http://bazaar.launchpad.net/~bigdata-charmers/charms/trusty/hdp- hadoop/trunk/view/head:/hooks/hdp-hadoop-common.py#L438 However, prior to the above commit, jps running as root did not detect a running NameNode process, so it fell through to start_namenode() and caused this bug. We no longer rely on jps, but rather pgrep to detect running processes, so this should be working correctly now. The latest hdp-hadoop (currently REVNO32) contains this fix. ** Changed in: hdp-hadoop (Juju Charms Collection) Status: New => Fix Released ** Changed in: hdp-pig (Juju Charms Collection) Status: New => Fix Released -- You received this bug notification because you are a member of Juju Big Data Development, which is a bug assignee. https://bugs.launchpad.net/bugs/1414080 Title: Race condition on relation when bundling hdp-hadoop Status in hdp-hadoop package in Juju Charms Collection: Fix Released Status in hdp-pig package in Juju Charms Collection: Fix Released Bug description: I build a demo to run a Machine Learning workshop based on a blog post made by Hortonworks. There are 2 sides in the demo: * Bundle: https://github.com/SaMnCo/bundle-flight-delay-demo * Charm: https://github.com/SaMnCo/charm-flight-delay-demo The bundle comprises: * YARN Master * 4x compute nodes * PIG colocated on YARN * ipython-notebook colocated on YARN When I deploy manually using the 00-deploy file provided in the bundle, everything goes well. However, when trying to deploy the bundle, it fails at relation creation. In the attached juju log collected at deployment, line 11347, we see Hadoop crashing. Then 11402, the crash expands. 11418, we discover the resource manager is not ready. I can reproduce the same behavior with a simpler bundle comprising: * YARN Master * 4x compute nodes * PIG colocated on YARN So it seems to really be related to PIG/YARN/Compute nodes relation. I can also reproduce the same behavior from juju-deployer, which fails with : 2015-01-23 16:51:21 [INFO] deployer.import: Adding relations... 2015-01-23 16:51:23 [INFO] deployer.import: Adding relation c00-yarn-master:namenode <-> c02-compute-node:datanode 2015-01-23 16:51:24 [INFO] deployer.import: Adding relation c00-yarn-master:resourcemanager <-> c02-compute-node:nodemanager 2015-01-23 16:51:25 [INFO] deployer.import: Adding relation c04-hdp-pig:namenode <-> c00-yarn-master:namenode 2015-01-23 16:51:25 [INFO] deployer.import: Adding relation c04-hdp-pig:resourcemanager <-> c00-yarn-master:resourcemanager 2015-01-23 16:51:26 [INFO] deployer.import: Adding relation c03-flight-delay-demo:notebook <-> c01-ipython-notebook:notebook 2015-01-23 16:51:26 [DEBUG] deployer.import: Waiting for relation convergence 60s 2015-01-23 16:52:29 [ERROR] deployer.env: The following units had errors: unit: c00-yarn-master/0: machine: 1 agent-state: error details: hook failed: "namenode-relation-joined" 2015-01-23 16:52:29 [INFO] deployer.cli: Deployment stopped. run time: 583.23 Let me know if you need anything else! Thanks! To manage notifications about this bug go to: https://bugs.launchpad.net/charms/+source/hdp-hadoop/+bug/1414080/+subscriptions -- Mailing list: https://launchpad.net/~bigdata-dev Post to : [email protected] Unsubscribe : https://launchpad.net/~bigdata-dev More help : https://help.launchpad.net/ListHelp
