[STORM-3195] IllegalArgumentException when rolling upgrade nimbus from 1.x to 2.x

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Invalid
• Assignee: Unassigned
• Reporter: Ethan Li
• Created: 15/Aug/18 17:11
• Updated: 16/Aug/18 13:30
• Resolved: 15/Aug/18 17:28

Description

2018-08-15 15:49:06.550 o.a.s.d.n.Nimbus timer [ERROR] Error while processing event
java.lang.RuntimeException: java.lang.IllegalArgumentException: Don't know how to convert 1.7604166666666667 to int
        at org.apache.storm.daemon.nimbus.Nimbus.lambda$launchServer$48(Nimbus.java:2837) ~[storm-server-2.0.0.y.jar:2.0.0.y]
        at org.apache.storm.StormTimer$1.run(StormTimer.java:110) ~[storm-client-2.0.0.y.jar:2.0.0.y]
        at org.apache.storm.StormTimer$StormTimerTask.run(StormTimer.java:226) [storm-client-2.0.0.y.jar:2.0.0.y]
Caused by: java.lang.IllegalArgumentException: Don't know how to convert 1.7604166666666667 to int
        at org.apache.storm.utils.ObjectReader.getInt(ObjectReader.java:78) ~[storm-client-2.0.0.y.jar:2.0.0.y]
        at org.apache.storm.daemon.StormCommon.addAcker(StormCommon.java:256) ~[storm-client-2.0.0.y.jar:2.0.0.y]
        at org.apache.storm.daemon.StormCommon.systemTopologyImpl(StormCommon.java:523) ~[storm-client-2.0.0.y.jar:2.0.0.y]
        at org.apache.storm.daemon.StormCommon.systemTopology(StormCommon.java:440) ~[storm-client-2.0.0.y.jar:2.0.0.y]
        at org.apache.storm.daemon.StormCommon.stormTaskInfoImpl(StormCommon.java:544) ~[storm-client-2.0.0.y.jar:2.0.0.y]
        at org.apache.storm.daemon.StormCommon.stormTaskInfo(StormCommon.java:460) ~[storm-client-2.0.0.y.jar:2.0.0.y]
        at org.apache.storm.daemon.nimbus.Nimbus.computeExecutors(Nimbus.java:1732) ~[storm-server-2.0.0.y.jar:2.0.0.y]
        at org.apache.storm.daemon.nimbus.Nimbus.getOrUpdateExecutors(Nimbus.java:1357) ~[storm-server-2.0.0.y.jar:2.0.0.y]
        at org.apache.storm.daemon.nimbus.Nimbus.computeExecutorToComponent(Nimbus.java:1752) ~[storm-server-2.0.0.y.jar:2.0.0.y]
        at org.apache.storm.daemon.nimbus.Nimbus.readTopologyDetails(Nimbus.java:1582) ~[storm-server-2.0.0.y.jar:2.0.0.y]
        at org.apache.storm.daemon.nimbus.Nimbus.getResourcesForTopology(Nimbus.java:2034) ~[storm-server-2.0.0.y.jar:2.0.0.y]
        at org.apache.storm.daemon.nimbus.Nimbus.getClusterInfoImpl(Nimbus.java:2676) ~[storm-server-2.0.0.y.jar:2.0.0.y]
        at org.apache.storm.daemon.nimbus.Nimbus.sendClusterMetricsToExecutors(Nimbus.java:2701) ~[storm-server-2.0.0.y.jar:2.0.0.y]
        at org.apache.storm.daemon.nimbus.Nimbus.lambda$launchServer$48(Nimbus.java:2834) ~[storm-server-2.0.0.y.jar:2.0.0.y]
        ... 2 more

We were rolling upgrading our storm cluster to 2.x and we found this error from nimbus.log. It's not necessary to do rolling upgrade but good news is we basically made it work.