hey Ali, 1.0.8 On Sat, Mar 7, 2015 at 5:20 PM, Ali Akhtar <ali.rac...@gmail.com> wrote:
> What version are you running? > > On Sat, Mar 7, 2015 at 2:14 PM, Jason Wee <peich...@gmail.com> wrote: > >> >> Hi Jan, thanks for your time to prepare the question and answer below, >> >> >> - How many nodes do you have on the ring ? >> 12 >> >> - What is the activity when this occurs - reads / writes/ >> compactions ? >> This cluster has a lot of writes and read. off peak period, ops >> center shown cluster write is about 5k/sec, read about 1k/sec and during >> peak period, write could be 22k/sec and read about 10k/sec. So this >> particular one node hang like every moment irrespect if it is peak or non >> peak, or compaction. >> >> - Is there anything that is unique about this node that makes it >> different from the other nodes ? >> Our nodes are same in term of operating system (centos 6) and >> cassandra configuration settings. Other than that, there are no other >> resources intensive application running in cassandra nodes. >> >> >> - Is this a periodic occurance OR a single occurence - I am trying >> to determine a pattern about when this shows up. >> it *always* happened and in fact, it is happening now. >> >> - What is the load distribution the ring (ie: is this node carrying >> more load than the others). >> As of this moment, >> >> - Address DC Rack Status State Load >> Owns Token >> - >> 155962751505430129087380028406227096910 >> - <node1> us-east 1e Up Normal 498.66 GB >> 8.33% 0 >> - <node2> us-east 1e Up Normal 503.36 GB >> 8.33% 14178431955039102644307275309657008810 >> - <node3> us-east 1e Up Normal 492.08 GB >> 8.33% 28356863910078205288614550619314017619 >> - <node4> us-east 1e Up Normal 499.54 GB >> 8.33% 42535295865117307932921825928971026430 >> - <node5> us-east 1e Up Normal 523.76 GB >> 8.33% 56713727820156407428984779325531226109 >> - <node6> us-east 1e Up Normal 515.36 GB >> 8.33% 70892159775195513221536376548285044050 >> - <node7> us-east 1e Up Normal 588.93 GB >> 8.33% 85070591730234615865843651857942052860 >> - <node8> us-east 1e Up Normal 498.51 GB >> 8.33% 99249023685273718510150927167599061670 >> - <node9> us-east 1e Up Normal 531.81 GB >> 8.33% 113427455640312814857969558651062452221 >> - <node10> us-east 1e Up Normal 501.85 GB >> 8.33% 127605887595351923798765477786913079290 >> - <node11> us-east 1e Up Normal 501.13 GB >> 8.33% 141784319550391026443072753096570088100 >> - <node12> us-east 1e Up Normal 508.45 GB >> 8.33% 155962751505430129087380028406227096910 >> >> so that one node is node5. At this instance ring output, yea, it is >> second highest in the ring but unlikely this is the cause. >> >> >> Jason >> >> On Sat, Mar 7, 2015 at 3:35 PM, Jan <cne...@yahoo.com> wrote: >> >>> HI Jason; >>> >>> The single node showing the anomaly is a hint that the problem is >>> probably local to a node (as you suspected). >>> >>> - How many nodes do you have on the ring ? >>> - What is the activity when this occurs - reads / writes/ >>> compactions ? >>> - Is there anything that is unique about this node that makes it >>> different from the other nodes ? >>> - Is this a periodic occurance OR a single occurence - I am trying >>> to determine a pattern about when this shows up. >>> - What is the load distribution the ring (ie: is this node carrying >>> more load than the others). >>> >>> >>> The system.log should have more info., about it. >>> >>> hope this helps >>> Jan/ >>> >>> >>> >>> >>> >>> On Friday, March 6, 2015 4:50 AM, Jason Wee <peich...@gmail.com> >>> wrote: >>> >>> >>> well, StatusLogger.java started shown in cassandra >>> system.log, MessagingService.java also shown some stage (e.g. read, >>> mutation) dropped. >>> >>> It's strange it only happen in this node but this type of message does >>> not shown in other node log file at the same time... >>> >>> Jason >>> >>> On Thu, Mar 5, 2015 at 4:26 AM, Jan <cne...@yahoo.com> wrote: >>> >>> HI Jason; >>> >>> Whats in the log files at the moment jstat shows 100%. >>> What is the activity on the cluster & the node at the specific point in >>> time (reads/ writes/ joins etc) >>> >>> Jan/ >>> >>> >>> On Wednesday, March 4, 2015 5:59 AM, Jason Wee <peich...@gmail.com> >>> wrote: >>> >>> >>> Hi, our cassandra node using java 7 update 72 and we ran jstat on one of >>> the node, and notice some strange behaviour as indicated by output below. >>> any idea why when eden space stay the same for few seconds like 100% and >>> 18.02% for few seconds? we suspect such "stalling" cause timeout to our >>> cluster. >>> >>> any idea what happened, what went wrong and what could cause this? >>> >>> >>> $ jstat -gcutil 32276 1s >>> >>> 0.00 5.78 91.21 70.94 60.07 2657 73.437 4 0.056 >>> 73.493 >>> 0.00 5.78 100.00 70.94 60.07 2657 73.437 4 0.056 >>> 73.493 >>> 0.00 5.78 100.00 70.94 60.07 2657 73.437 4 0.056 >>> 73.493 >>> 0.00 5.78 100.00 70.94 60.07 2657 73.437 4 0.056 >>> 73.493 >>> 0.00 5.78 100.00 70.94 60.07 2657 73.437 4 0.056 >>> 73.493 >>> 0.00 5.78 100.00 70.94 60.07 2657 73.437 4 0.056 >>> 73.493 >>> 0.00 5.78 100.00 70.94 60.07 2657 73.437 4 0.056 >>> 73.493 >>> 0.00 5.78 100.00 70.94 60.07 2657 73.437 4 0.056 >>> 73.493 >>> 0.00 5.78 100.00 70.94 60.07 2657 73.437 4 0.056 >>> 73.493 >>> 0.00 5.78 100.00 70.94 60.07 2657 73.437 4 0.056 >>> 73.493 >>> 0.00 5.78 100.00 70.94 60.07 2657 73.437 4 0.056 >>> 73.493 >>> 0.00 5.78 100.00 70.94 60.07 2657 73.437 4 0.056 >>> 73.493 >>> 0.00 5.78 100.00 70.94 60.07 2657 73.437 4 0.056 >>> 73.493 >>> 0.00 5.78 100.00 70.94 60.07 2657 73.437 4 0.056 >>> 73.493 >>> 0.00 5.78 100.00 70.94 60.07 2657 73.437 4 0.056 >>> 73.493 >>> 0.00 5.78 100.00 70.94 60.07 2657 73.437 4 0.056 >>> 73.493 >>> 0.00 5.78 100.00 70.94 60.07 2657 73.437 4 0.056 >>> 73.493 >>> 0.00 4.65 29.66 71.00 60.07 2659 73.488 4 0.056 >>> 73.544 >>> 0.00 4.65 70.88 71.00 60.07 2659 73.488 4 0.056 >>> 73.544 >>> 0.00 4.65 71.58 71.00 60.07 2659 73.488 4 0.056 >>> 73.544 >>> 0.00 4.65 72.15 71.00 60.07 2659 73.488 4 0.056 >>> 73.544 >>> 0.00 4.65 72.33 71.00 60.07 2659 73.488 4 0.056 >>> 73.544 >>> 0.00 4.65 72.73 71.00 60.07 2659 73.488 4 0.056 >>> 73.544 >>> 0.00 4.65 73.20 71.00 60.07 2659 73.488 4 0.056 >>> 73.544 >>> 0.00 4.65 73.71 71.00 60.07 2659 73.488 4 0.056 >>> 73.544 >>> 0.00 4.65 73.84 71.00 60.07 2659 73.488 4 0.056 >>> 73.544 >>> 0.00 4.65 73.91 71.00 60.07 2659 73.488 4 0.056 >>> 73.544 >>> 0.00 4.65 74.18 71.00 60.07 2659 73.488 4 0.056 >>> 73.544 >>> 0.00 4.65 74.29 71.00 60.07 2659 73.488 4 0.056 >>> 73.544 >>> 0.00 4.65 74.29 71.00 60.07 2659 73.488 4 0.056 >>> 73.544 >>> 0.00 4.65 74.29 71.00 60.07 2659 73.488 4 0.056 >>> 73.544 >>> 0.00 4.65 74.29 71.00 60.07 2659 73.488 4 0.056 >>> 73.544 >>> 0.00 4.65 74.29 71.00 60.07 2659 73.488 4 0.056 >>> 73.544 >>> 0.00 4.65 74.29 71.00 60.07 2659 73.488 4 0.056 >>> 73.544 >>> 0.00 4.65 74.29 71.00 60.07 2659 73.488 4 0.056 >>> 73.544 >>> 0.00 5.43 12.64 71.09 60.07 2661 73.534 4 0.056 >>> 73.590 >>> 0.00 5.43 18.02 71.09 60.07 2661 73.534 4 0.056 >>> 73.590 >>> 0.00 5.43 18.02 71.09 60.07 2661 73.534 4 0.056 >>> 73.590 >>> 0.00 5.43 18.02 71.09 60.07 2661 73.534 4 0.056 >>> 73.590 >>> 0.00 5.43 18.02 71.09 60.07 2661 73.534 4 0.056 >>> 73.590 >>> 0.00 5.43 18.02 71.09 60.07 2661 73.534 4 0.056 >>> 73.590 >>> 0.00 5.43 18.02 71.09 60.07 2661 73.534 4 0.056 >>> 73.590 >>> 0.00 5.43 18.02 71.09 60.07 2661 73.534 4 0.056 >>> 73.590 >>> 0.00 5.43 18.02 71.09 60.07 2661 73.534 4 0.056 >>> 73.590 >>> 0.00 5.43 18.02 71.09 60.07 2661 73.534 4 0.056 >>> 73.590 >>> 0.00 5.43 18.02 71.09 60.07 2661 73.534 4 0.056 >>> 73.590 >>> 0.00 5.43 18.02 71.09 60.07 2661 73.534 4 0.056 >>> 73.590 >>> 0.00 5.43 18.02 71.09 60.07 2661 73.534 4 0.056 >>> 73.590 >>> 0.00 5.43 18.02 71.09 60.07 2661 73.534 4 0.056 >>> 73.590 >>> 0.00 5.43 18.02 71.09 60.07 2661 73.534 4 0.056 >>> 73.590 >>> 0.00 5.43 18.02 71.09 60.07 2661 73.534 4 0.056 >>> 73.590 >>> 0.00 5.43 18.02 71.09 60.07 2661 73.534 4 0.056 >>> 73.590 >>> 0.00 5.43 18.02 71.09 60.07 2661 73.534 4 0.056 >>> 73.590 >>> 0.00 5.43 69.24 71.09 60.07 2661 73.534 4 0.056 >>> 73.590 >>> 0.00 5.43 78.05 71.09 60.07 2661 73.534 4 0.056 >>> 73.590 >>> 0.00 5.43 78.97 71.09 60.07 2661 73.534 4 0.056 >>> 73.590 >>> 0.00 5.43 79.07 71.09 60.07 2661 73.534 4 0.056 >>> 73.590 >>> 0.00 5.43 79.18 71.09 60.07 2661 73.534 4 0.056 >>> 73.590 >>> 0.00 5.43 80.09 71.09 60.07 2661 73.534 4 0.056 >>> 73.590 >>> 0.00 5.43 80.36 71.09 60.07 2661 73.534 4 0.056 >>> 73.590 >>> 0.00 5.43 80.51 71.09 60.07 2661 73.534 4 0.056 >>> 73.590 >>> 0.00 5.43 80.70 71.09 60.07 2661 73.534 4 0.056 >>> 73.590 >>> 0.00 5.43 81.31 71.09 60.07 2661 73.534 4 0.056 >>> 73.590 >>> 0.00 5.43 81.63 71.09 60.07 2661 73.534 4 0.056 >>> 73.590 >>> 0.00 5.43 82.94 71.09 60.07 2661 73.534 4 0.056 >>> 73.590 >>> 0.00 5.43 82.94 71.09 60.07 2661 73.534 4 0.056 >>> 73.590 >>> 0.00 5.43 82.94 71.09 60.07 2661 73.534 4 0.056 >>> 73.590 >>> 0.00 5.43 82.94 71.09 60.07 2661 73.534 4 0.056 >>> 73.590 >>> 0.00 5.43 82.94 71.09 60.07 2661 73.534 4 0.056 >>> 73.590 >>> 0.00 5.43 82.94 71.09 60.07 2661 73.534 4 0.056 >>> 73.590 >>> 0.00 5.43 82.94 71.09 60.07 2661 73.534 4 0.056 >>> 73.590 >>> 0.00 9.37 65.64 71.21 60.07 2663 73.583 4 0.056 >>> 73.639 >>> 0.00 3.49 11.89 71.25 60.10 2665 73.623 4 0.056 >>> 73.679 >>> 0.00 3.49 66.11 71.25 60.10 2665 73.623 4 0.056 >>> 73.679 >>> 14.26 0.00 9.91 71.25 60.10 2666 73.649 4 0.056 >>> 73.705 >>> 14.26 0.00 73.25 71.25 60.10 2666 73.649 4 0.056 >>> 73.705 >>> 0.00 10.49 14.43 71.29 60.10 2667 73.675 4 0.056 >>> 73.731 >>> 0.00 10.49 66.07 71.29 60.10 2667 73.675 4 0.056 >>> 73.731 >>> 0.00 10.49 100.00 71.29 60.10 2667 73.675 4 0.056 >>> 73.731 >>> 0.00 10.49 100.00 71.29 60.10 2667 73.675 4 0.056 >>> 73.731 >>> 0.00 10.49 100.00 71.29 60.10 2667 73.675 4 0.056 >>> 73.731 >>> 0.00 10.49 100.00 71.29 60.10 2667 73.675 4 0.056 >>> 73.731 >>> 0.00 10.49 100.00 71.29 60.10 2667 73.675 4 0.056 >>> 73.731 >>> 0.00 10.49 100.00 71.29 60.10 2667 73.675 4 0.056 >>> 73.731 >>> 0.00 10.49 100.00 71.29 60.10 2667 73.675 4 0.056 >>> 73.731 >>> 0.00 10.49 100.00 71.29 60.10 2667 73.675 4 0.056 >>> 73.731 >>> 0.00 10.49 100.00 71.29 60.10 2667 73.675 4 0.056 >>> 73.731 >>> 0.00 10.49 100.00 71.29 60.10 2667 73.675 4 0.056 >>> 73.731 >>> 0.00 10.49 100.00 71.29 60.10 2667 73.675 4 0.056 >>> 73.731 >>> 0.00 10.49 100.00 71.29 60.10 2667 73.675 4 0.056 >>> 73.731 >>> 0.00 10.49 100.00 71.29 60.10 2667 73.675 4 0.056 >>> 73.731 >>> 0.00 10.49 100.00 71.29 60.10 2667 73.675 4 0.056 >>> 73.731 >>> 0.00 10.49 100.00 71.29 60.10 2667 73.675 4 0.056 >>> 73.731 >>> >>> >>> thanks. >>> >>> jason >>> >>> >>> >>> >>> >>> >>> >> >