Want to hop on to helix irc to debug this? On Mon, Nov 17, 2014 at 5:08 PM, Varun Sharma <[email protected]> wrote:
> I looked at the logs and gc was fine as the system was processing other > events around the same time. > > Is there anything else specifically I shold look for in the logs ? Is > there a way to find out whether a node was removed from the cluster due to > a ZK issue ? > > Thanks ! > Varun > > On Mon, Nov 17, 2014 at 4:32 PM, Varun Sharma <[email protected]> wrote: > >> I am wondering how come a partition was in the online state for a >> resource that was newly created. >> >> Thanks >> Varun >> >> On Mon, Nov 17, 2014 at 4:31 PM, Varun Sharma <[email protected]> >> wrote: >> >>> I am using 0.6.4. In this case, I created a resource and set its ideal >>> state and the partitions onlined themselves. It seems for that node - it >>> opened a whole bunch of other partitions at around the same time (~ 30 or >>> so) but failed to open 3-4 partitions. This was for a brand new resource I >>> created.. >>> >>> THanks ! >>> Varun >>> >>> On Mon, Nov 17, 2014 at 4:24 PM, kishore g <[email protected]> wrote: >>> >>>> One suggestion is to check for GC pauses on the nodes. Nodes loses the >>>> cluster member ship if they get into long GC or starts flapping. That might >>>> be cause for state mismatch. However, external view must be up to date. It >>>> might help if you can attach the controller logs and node logs. >>>> >>>> On Mon, Nov 17, 2014 at 4:10 PM, Varun Sharma <[email protected]> >>>> wrote: >>>> >>>>> Hi, >>>>> >>>>> I am seeing the following issue for many partitions in helix using a >>>>> simple Online->Offline state model factory. The external view says that >>>>> the >>>>> partition has been assigned to 3 hosts. However, when I look at the hosts >>>>> only 1 of them executed the OFFLINE --> ONLINE transition. >>>>> >>>>> On the hosts, that did not execute the transition, I see the following: >>>>> >>>>> 2014-11-13 09:29:54,394 [pool-3-thread-11] >>>>> (HelixStateTransitionHandler.java:206) WARN *Force CurrentState on >>>>> Zk to be stateModel's CurrentState*. *partitionKey: 490*, >>>>> currentState: ONLINE, message: 12690ce8-8098-46b1-a93d-279604f0e3db, >>>>> {CREATE_TIMESTAMP=1415870993349, ClusterEventName=idealStateChange, >>>>> EXECUTE_START_TIMESTAMP=1415870994382, EXE_SESSION_ID=149a14ada0d0013, >>>>> FROM_STATE=OFFLINE, MSG_ID=*12690ce8-8098-46b1-a93d-279604f0e3db*, >>>>> MSG_STATE=read, MSG_TYPE=STATE_TRANSITION, PARTITION_NAME=490, >>>>> READ_TIMESTAMP=1415870993787, >>>>> RESOURCE_NAME=$terrapin$data$meta_pin_join$1415866960201, >>>>> SRC_NAME=hdfsterrapin-a-namenode001_9090, SRC_SESSION_ID=147a7beb2dd8ed7, >>>>> STATE_MODEL_DEF=OnlineOffline, STATE_MODEL_FACTORY_NAME=DEFAULT, >>>>> TGT_NAME=hdfsterrapin-a-datanode-ba3ad256, TGT_SESSION_ID=149a14ada0d0013, >>>>> TO_STATE=ONLINE}{}{} >>>>> >>>>> When I grep the message ID in the controller, I see the following: >>>>> >>>>> 2014-11-14 09:34:56,265 [StatusDumpTimerTask] >>>>> (ZKPathDataDumpTask.java:155) INFO { >>>>> >>>>> "id" : "149a14ada0d0013__$terrapin$data$meta_pin_join$1415866960201", >>>>> >>>>> "mapFields" : { >>>>> >>>>> "HELIX_ERROR 20141113-092954.000419 STATE_TRANSITION >>>>> c1193025-b416-49d7-adc2-10afe2389141" : { >>>>> >>>>> "AdditionalInfo" : "Message execution failed. msgId: >>>>> 12690ce8-8098-46b1-a93d-279604f0e3db, errorMsg: >>>>> org.apache.helix.messaging.handling. >>>>> *HelixStateTransitionHandler$HelixStateMismatchException*: Current >>>>> state of stateModel does not match the fromState in Message, Current >>>>> State:ONLINE, message expected:OFFLINE, partition: 490, from: >>>>> hdfsterrapin-a-namenode001_9090, to: hdfsterrapin-a-datanode-ba3ad256", >>>>> >>>>> "Class" : "class >>>>> org.apache.helix.messaging.handling.HelixStateTransitionHandler", >>>>> >>>>> "MSG_ID" : "12690ce8-8098-46b1-a93d-279604f0e3db", >>>>> >>>>> "Message state" : "READ" >>>>> >>>>> }, >>>>> >>>>> >>>>> What could be causing this - when I restart the node, the error >>>>> disappears (meaning that the node is able to perform the state >>>>> transition). >>>>> What could be causing this state mismatch ? >>>>> >>>>> >>>>> Thanks >>>>> >>>>> Varun >>>>> >>>> >>>> >>> >> >
