No it has nothing to do with GC. It means that the command line confused the JVM and it thought you wanted to run a the main method in a class called _JAAS_PLACEHOLDER.
- Bobby On Thursday, June 29, 2017, 12:45:16 PM CDT, sam mohel <[email protected]> wrote: Excuse me . Is that line Drpc.childopts"-Xmx768m _JAAS_PLACEHOLDER -Xloggc:/var/log/storm/drpc-gc.log -XX:+PrintGCDetails -XX:+PrintGCTimeStamps -XX:+PrintGCDateStamps" Means to check if there's a problem with garbage collector or not ? And about want I got Could not find or load main class _JAAS_PLACEHOLDER . Is that means error I should fix and I have problem with GC ? > Delete _JAAS_PLACEHOLDER. It is there as something you should replace if you > want to have security for your DRPC server. > > > - Bobby > > > On Thursday, June 29, 2017, 10:25:24 AM CDT, sam mohel <[email protected]> > wrote: > > Really appreciate your time Bobby . So the error I got when I added this line > to drpc.childopts > "-Xmx768m _JAAS_PLACEHOLDER -Xloggc:/var/log/storm/drpc-gc.log > -XX:+PrintGCDetails -XX:+PrintGCTimeStamps -XX:+PrintGCDateStamps" > I got Error: Could not find or load main class _JAAS_PLACEHOLDER how can I > fix it ? > > On Thursday, June 29, 2017, Bobby Evans <[email protected]> wrote: >> I don't see issues with your configs on the surface. >> >> >> - Bobby >> >> >> On Thursday, June 29, 2017, 10:02:37 AM CDT, sam mohel <[email protected]> >> wrote: >> >> Are my configurations right ? >> I got in terminal when submitted the topology after some times >> drpcexecutionexception(msg:request timed out) >> In log file of drpc I got >> [INFO] Starting Distributed RPC servers... >> [WARN] Timeout DRPC request id: 200 start at 1498657923 >> In worker log file doesn't receive any error message . >> But I tried to add this drpc.childopts: "-Xmx768m _JAAS_PLACEHOLDER >> -Xloggc:/var/log/storm/drpc-gc.log -XX:+PrintGCDetails >> -XX:+PrintGCTimeStamps -XX:+PrintGCDateStamps" in storm.yaml to check if >> there is problem in RAM and retsart submitting again . >> I got in drpc terminal >> Error: Could not find or load main class _JAAS_PLACEHOLDER >> And in terminal when submitted >> Exception in thread "main" java.lang.RuntimeException: >> org.apache.thrift7.transport.TTransportException: java.net.ConnectException: >> Connection refused (Connection refused) >> at backtype.storm.utils.DRPCClient.<init>(DRPCClient.java:42) >> at backtype.storm.utils.DRPCClient.<init>(DRPCClient.java:47) >> at trident.FirstStoryDetection.main(FirstStoryDetection.java:308) >> Caused by: org.apache.thrift7.transport.TTransportException: >> java.net.ConnectException: Connection refused (Connection refused) >> >> >> On Thursday, June 29, 2017, Bobby Evans <[email protected]> wrote: >>> You are going to need to look at the logs for your topology and the logs >>> for the drpc server to see if there is anything in there that indicates >>> what is happening. >>> >>> >>> - Bobby >>> >>> >>> On Wednesday, June 28, 2017, 11:21:14 PM CDT, sam mohel >>> <[email protected]> wrote: >>> >>> I submitted topology in local without any problem , but in production mode >>> i couldn't as you can see in ui zeros values in columns except execute >>> columns . >>> i got after sometimes in terminal drpcexecutionexception(msg: request >>> timed out) >>> my configurations are >>> Machine A and Machine B >>> storm.yaml in Machine A is >>> storm.zookeeper.servers: >>> - "192.168.x.x" >>> >>> nimbus.host : "192.168.x.x" >>> supervisor.childopts: "-Xmx4g" >>> worker.childopts: "-Xmx4g" >>> storm.yaml in Machine B is >>> storm.zookeeper.servers: >>> - "192.168.x.x" >>> >>> nimbus.host : "192.168.x.x" >>> supervisor.childopts: "-Xmx4g" >>> worker.childopts: "-Xmx4g" >>> i set drpc in the code >>> Config conf = new Config(); >>> List<String> dprcServers = new ArrayList<String>(); >>> dprcServers.add("192.168.x.x") ; >>> conf.put(Config.DRPC_SERVERS, dprcServers); >>> conf.put(Config.DRPC_PORT, 3772); >>> // distributed mode >>> Config conf = createTopologyConfiguration( prop, true); >>> LocalDRPC drpc = null; >>> StormSubmitter.submitTopology( args[0], conf, buildTopology(drpc)); >>> client=new DRPCClient("192.168.x.x", 3772); >>> i used same ip address for storm.zookeeper.servers , nimbus.host >>> ,dprcServers and DRPCClient . Is that wrong ? >>> and i ran nimbus , drpc,ui in Machine A , I ran supervisor in Machine B >>> i appreciate any help , Thanks >>> >>>
