Your error message shows that your DRPC server isn't even running, so you don't need to worry about the amount of memory until you actually have the processes up and running. Once you have them running then you can look at the GC metrics to see if it looks like you need to give it more heap. This is generic for java in general and has little to do with storm in particular.
- Bobby On Thursday, June 29, 2017, 1:18:36 PM CDT, sam mohel <[email protected]> wrote: Thanks but how can i know if Memory is suitable for my project or not ? On Thu, Jun 29, 2017 at 8:10 PM, Bobby Evans <[email protected]> wrote: 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 >>> >>>
