Failed to connect to master, spark in docker - apache-spark

I am running spark on following docker image:
https://github.com/sequenceiq/docker-spark
I am trying to run the spark-bench ( https://github.com/SparkTC/spark-bench ) I tried following command:
<SparkBench_Root>/KMean/bin/gen_data.sh
I am getting the following error:
Association with remote system [akka.tcp://sparkMaster#172.17.0.3:7077] has failed, address is now gated for [5000] ms. Reason: [Association failed with [akka.tcp://sparkMaster#172.17.0.3:7077]] Caused by: [Connection refused: /172.17.0.3:7077]
16/03/16 08:00:36 WARN client.AppClient$ClientEndpoint: Failed to connect to master 172.17.0.3:7077
akka.actor.ActorNotFound: Actor not found for: ActorSelection[Anchor(akka.tcp://sparkMaster#172.17.0.3:7077/), Path(/user/Master)]
at akka.actor.ActorSelection$$anonfun$resolveOne$1.apply(ActorSelection.scala
Thanks
Shuja

Related

while installing cassandra in EMR cluster i am getting error

$ wget https://dlcdn.apache.org/cassandra/4.0.8/apache-cassandra-4.0.8-bin.tar.gz
--2023-02-19 04:04:57-- https://dlcdn.apache.org/cassandra/4.0.8/apache-cassandra-4.0.8-bin.tar.gz
Resolving dlcdn.apache.org (dlcdn.apache.org)... 151.101.2.132, 2a04:4e42::644
Connecting to dlcdn.apache.org (dlcdn.apache.org)|151.101.2.132|:443... failed: Connection timed out.
Connecting to dlcdn.apache.org (dlcdn.apache.org)|2a04:4e42::644|:443... failed: Network is unreachable.

Error: Failed to connect before the deadline URL:grpc://localhost:7051

:~/Documents/test/education/LFS171x/fabric-material/tuna-app/$ node query.js
Store path:/home/*******/Documents/test/education/LFS171x/fabric-material/tuna-app/hfc-key-store
Successfully loaded user1 from persistence
2020-02-11T05:56:10.423Z - error: [Remote.js]: Error: Failed to connect before the deadline URL:grpc://localhost:7051
Query has completed, checking results
error from query = Error: Failed to connect before the deadline URL:grpc://localhost:7051
at checkState (/home/******/Documents/test/education/LFS171x/fabric-material/tuna-app/node_modules/fabric-client/node_modules/grpc/src/client.js:883:16) {
connectFailed: true
}
Im experimenting Hyperledger Fabric, using this link for reference,
Successfully registered admin and user, using registerAdmin.js and registerUser.js.
I am currently facing this error after running node query.js.
I need help troubleshooting this error,
Error: Failed to connect before the deadline
URL:grpc://localhost:7051.
Platform: Ubuntu 18.04,
Experimenting hyperledger fabric using Local Environment.
Thanks in advance.

prestodb: Failed to launch presto server and no nodes running

Below is the snapshot of the error
presto> select * from system.runtime.nodes;
Error running command: java.net.ConnectException: Failed to connect to localhost/127.0.0.1:8080
I tried using local IP address and 10.0.2.2 yet the same error occurs.

Failed to fetch drpc result

I've this problem with supervisor:
DRPCSpout [ERROR] Failed to fetch DRPC result from DRPC server
org.apache.thrift7.transport.TTransportException: java.net.ConnectException:
Connection refused
What are data? If you need that, I can share it here.

Cpanel send email about "System Integrity checking detected a modified system file"?

I got email from my hosting, here detail email:
The following list of files have FAILED the md5sum comparison test.
This means that the file has been changed in some way. This could be a
result of an OS update or application upgrade. If the change is
unexpected it should be investigated:
/usr/bin/berkeley_db_svc: FAILED
/usr/bin/db_archive: FAILED
/usr/bin/db_checkpoint: FAILED
/usr/bin/db_codegen: FAILED
/usr/bin/db_deadlock: FAILED
/usr/bin/db_dump: FAILED
/usr/bin/db_dump185: FAILED
/usr/bin/db_hotbackup: FAILED
/usr/bin/db_printlog: FAILED
/usr/bin/db_recover: FAILED
/usr/bin/db_stat: FAILED
/usr/bin/db_upgrade: FAILED
/usr/bin/db_verify: FAILED
/usr/bin/free: FAILED
/usr/bin/pgrep: FAILED
/usr/bin/pkill: FAILED
/usr/sbin/build-locale-archive: FAILED
/usr/sbin/glibc_post_upgrade.x86_64: FAILED
/usr/sbin/iconvconfig: FAILED
/usr/sbin/iconvconfig.x86_64: FAILED
/bin/bash: FAILED
/bin/sh: FAILED
/sbin/dmeventd: FAILED
/sbin/ldconfig: FAILED
/sbin/lvchange: FAILED
/sbin/lvconvert: FAILED
/sbin/lvcreate: FAILED
/sbin/lvdisplay: FAILED
/sbin/lvextend: FAILED
/sbin/lvm: FAILED
/sbin/lvmchange: FAILED
/sbin/lvmdiskscan: FAILED
/sbin/lvmetad: FAILED
/sbin/lvmsadc: FAILED
/sbin/lvmsar: FAILED
/sbin/lvreduce: FAILED
/sbin/lvremove: FAILED
/sbin/lvrename: FAILED
/sbin/lvresize: FAILED
/sbin/lvs: FAILED
/sbin/lvscan: FAILED
/sbin/pvchange: FAILED
/sbin/pvck: FAILED
/sbin/pvcreate: FAILED
/sbin/pvdisplay: FAILED
/sbin/pvmove: FAILED
/sbin/pvremove: FAILED
/sbin/pvresize: FAILED
how to solve this problem, and also what this will affect condition of my hosting (security) future ?
please your advice & thank you.
Have you updated the cPanel on your server? I think you have received this mail after cPanel/WHM update(After upcp cron), Because cPanel updated process has updated all these files on your server and CSF has found that changes in md5sum comparison test.

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