# ERROR com.dremio.exec.rpc.BasicClient - Failed to establish connection **URL:** \ **Category:** Uncategorized\ **Created:** [March 27, 2020, 11:01am UTC](https://community.dremio.com/t/error-com-dremio-exec-rpc-basicclient-failed-to-establish-connection/5291 "2020-03-27T11:01:01Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![parassaluja23](https://avatars.discourse-cdn.com/v4/letter/p/ecb155/32.png) [@parassaluja23](https://community.dremio.com/u/parassaluja23)\ **Post date:** [March 27, 2020, 11:01am UTC](https://community.dremio.com/t/error-com-dremio-exec-rpc-basicclient-failed-to-establish-connection/5291/1 "2020-03-27T11:01:02Z")
Hi Team, I have installed dremio on standalone ubuntu machine for testing and tried making a connection to SQL database. After connection and saving the data as virtual dataset i am unable to run queries. Even tried with dremio sample dataset and getting the same error. Error on UI : Error setting up remote fragment execution Error in server.log: 2020-03-27 10:54:14,510 [out-of-band-observer] INFO query.logger - {“queryId”:“218224d1-eb6d-9524-d139-269dfd61f300”,“schema”:"[Samples, [samples.dremio.com](http://samples.dremio.com)]",“queryText”:“SELECT \* FROM “SF\_incidents2016.json””,“start”:1585306413169,“finish”:1585306454505,“outcome”:“FAILED”,“username”:“parassaluja23”} 2020-03-27 10:54:19,569 [FABRIC-1] ERROR com.dremio.exec.rpc.BasicClient - Failed to establish connection java.util.concurrent.ExecutionException: io.netty.channel.ConnectTimeoutException: connection timed out: PBLAP110/10.0.159.110:45678 at io.netty.util.concurrent.DefaultPromise.get(DefaultPromise.java:372) [netty-common-4.1.45.Final.jar:4.1.45.Final] at com.dremio.exec.rpc.BasicClient$ConnectionMultiListener$ConnectionEstablishmentListener.operationComplete(BasicClient.java:284) [dremio-services-base-rpc-4.1.8-202003120636020140-9c2a6b13.jar:4.1.8-202003120636020140-9c2a6b13] at com.dremio.exec.rpc.BasicClient$ConnectionMultiListener$ConnectionEstablishmentListener.operationComplete(BasicClient.java:272) [dremio-services-base-rpc-4.1.8-202003120636020140-9c2a6b13.jar:4.1.8-202003120636020140-9c2a6b13] at io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:577) [netty-common-4.1.45.Final.jar:4.1.45.Final] at io.netty.util.concurrent.DefaultPromise.notifyListeners0(DefaultPromise.java:570) [netty-common-4.1.45.Final.jar:4.1.45.Final] at io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:549) [netty-common-4.1.45.Final.jar:4.1.45.Final] at io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:490) [netty-common-4.1.45.Final.jar:4.1.45.Final] at io.netty.util.concurrent.DefaultPromise.setValue0(DefaultPromise.java:615) [netty-common-4.1.45.Final.jar:4.1.45.Final] at io.netty.util.concurrent.DefaultPromise.setFailure0(DefaultPromise.java:608) [netty-common-4.1.45.Final.jar:4.1.45.Final] at io.netty.util.concurrent.DefaultPromise.tryFailure(DefaultPromise.java:117) [netty-common-4.1.45.Final.jar:4.1.45.Final] at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe$1.run(AbstractNioChannel.java:263) [netty-transport-4.1.45.Final.jar:4.1.45.Final] at io.netty.util.concurrent.PromiseTask.runTask(PromiseTask.java:98) [netty-common-4.1.45.Final.jar:4.1.45.Final] at io.netty.util.concurrent.ScheduledFutureTask.run(ScheduledFutureTask.java:170) [netty-common-4.1.45.Final.jar:4.1.45.Final] at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:164) [netty-common-4.1.45.Final.jar:4.1.45.Final] at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:472) [netty-common-4.1.45.Final.jar:4.1.45.Final] at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:500) [netty-transport-4.1.45.Final.jar:4.1.45.Final] at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989) [netty-common-4.1.45.Final.jar:4.1.45.Final] at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) [netty-common-4.1.45.Final.jar:4.1.45.Final] at java.lang.Thread.run(Thread.java:748) [na:1.8.0\_242] Caused by: io.netty.channel.ConnectTimeoutException: connection timed out: PBLAP876/10.0.159.120:45678 at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe$1.run(AbstractNioChannel.java:261) [netty-transport-4.1.45.Final.jar:4.1.45.Final] … 8 common frames omitted 2020-03-27 10:54:19,569 [FABRIC-1] INFO c.d.services.fabric.FabricClient - [FABRIC]: Channel closed null \<–\> null (fabric client) ---
**Author:** ![dacopan](https://sea2.discourse-cdn.com/flex020/user_avatar/community.dremio.com/dacopan/32/4289_2.png) [@dacopan](https://community.dremio.com/u/dacopan)\ **Post date:** [March 27, 2020, 6:52pm UTC](https://community.dremio.com/t/error-com-dremio-exec-rpc-basicclient-failed-to-establish-connection/5291/2 "2020-03-27T18:52:19Z")
your VDS is called “SF\_incidents2016.json” or you upload a JSON to dremio? please share query profile. also wchich version of java are using? Dremio only suppor java 1.8 ---
**Author:** ![parassaluja23](https://avatars.discourse-cdn.com/v4/letter/p/ecb155/32.png) [@parassaluja23](https://community.dremio.com/u/parassaluja23)\ **Post date:** [March 30, 2020, 7:54am UTC](https://community.dremio.com/t/error-com-dremio-exec-rpc-basicclient-failed-to-establish-connection/5291/3 "2020-03-30T07:54:42Z")
Hi @dacopan i just used the sample data provided by Dremio named as ‘[Samples.samples.dremio.com](http://Samples.samples.dremio.com)’ and i m using java verion as 8 java -version openjdk version “1.8.0\_242” OpenJDK Runtime Environment (build 1.8.0\_242-8u242-b08-0ubuntu3~18.04-b08) OpenJDK 64-Bit Server VM (build 25.242-b08, mixed mode) query file attached[9294c616-623c-4079-b653-6c41ad5bd75e.zip](https://community.dremio.com/uploads/short-url/giIGSp9WNMB24uMavh9I6T1Nl4p.zip) (7.4 KB) ---
**Author:** ![balaji.ramaswamy](https://sea2.discourse-cdn.com/flex020/user_avatar/community.dremio.com/balaji.ramaswamy/32/843_2.png) [@balaji.ramaswamy](https://community.dremio.com/u/balaji.ramaswamy)\ **Post date:** [April 7, 2020, 9:46pm UTC](https://community.dremio.com/t/error-com-dremio-exec-rpc-basicclient-failed-to-establish-connection/5291/4 "2020-04-07T21:46:58Z")
@parassaluja23 it looks like there was a problem on node “PBLAP876”. Would you be able to check its log file to see we can spot any errors?