question Re: Impala Catalog Server supervisor permissions in Support Questions

Impala Catalog Server supervisor permissions

gjaehrling — Fri, 16 Sep 2022 11:50:35 GMT

I have a problem on a CDH 5.8.0 parcels testsystem starting the Impala Catalog Server.

The error message is the following:

Can't open /var/run/cloudera-scm-agent/process/148-impala-CATALOGSERVER/supervisor.conf: Permission denied.

The permissions for this file are:

-rw------- 1 root   root    2970 Jun 27 23:01 supervisor.conf

All other files and directories in the /var/run/cloudera-scm-agent/process/148-impala-CATLOGSERVER folder having owner impala and group impala.

When I change the permissions it will be overwritten on the next start.

What is wrong here?

And what needs to be changed. I recently installed a different service and changed the visudo file, but I have not changed the Impala configuration.

Thanks for the advice.

Re: Impala Catalog Server supervisor permissions

csguna — Thu, 29 Jun 2017 05:05:10 GMT

Would you mind deleting the Impala Catalog and Statestore instance . Add a new instance one more . see if those errors popping up.

i hardly remeber I had this issue . the above fixed it for me .

Re: Impala Catalog Server supervisor permissions

MSattari — Thu, 29 Jun 2017 08:02:18 GMT

I have the same problem. I installed CDH 5.11.1 on a single machine AWS EC2. When starting impala service, Impala Catalog Server and Impala Daemon don't start. I removed the role and added again but the problem still persists.

Impala Daemon stderr :

...

+ exec /opt/cloudera/parcels/CDH-5.11.1-1.cdh5.11.1.p0.4/lib/impala/../../bin/impalad --flagfile=/run/cloudera-scm-agent/process/154-impala-IMPALAD/impala-conf/impalad_flags
Redirecting stderr to /var/log/impalad/impalad.ERROR

...

Can't open /run/cloudera-scm-agent/process/154-impala-IMPALAD/config.zip: Permission denied.
Can't open /run/cloudera-scm-agent/process/154-impala-IMPALAD/proc.json: Permission denied

Impala Catalog Server stderr:

...

exec /opt/cloudera/parcels/CDH-5.11.1-1.cdh5.11.1.p0.4/lib/impala/../../bin/catalogd --flagfile=/run/cloudera-scm-agent/process/155-impala-CATALOGSERVER/impala-conf/catalogserver_flags
Redirecting stderr to /var/log/catalogd/catalogd.ERROR

...

Can't open /run/cloudera-scm-agent/process/155-impala-CATALOGSERVER/config.zip: Permission denied.
Can't open /run/cloudera-scm-agent/process/155-impala-CATALOGSERVER/proc.json: Permission denied

Any help will be appreciated.

Re: Impala Catalog Server supervisor permissions

gjaehrling — Thu, 29 Jun 2017 11:24:39 GMT

Deleting the instances and adding them again did not solve the problem.

The issue still exists.

Re: Impala Catalog Server supervisor permissions

csguna — Thu, 29 Jun 2017 12:33:00 GMT

since i see you logs says that you are downlading the parcels from /opt/cloudera/parcels/CDH-5.11.1-1.cdh5.11.1.p0.4/lib/impala/../..

it says ( in your log file ) go to

 /var/log/impalad/impalad.ERROR

it may direct to mini-dump logs (/var/log/impala-minidumps/impalad / )

if you open the file and if you come across the JRE runtime error plus if it complains about the core dump .

Then it is the bug that is related to Linux kernel , impala's JRE error .

the fix is to increase the Stack thread . do the below steps

the error should look like this

A fatal error has been detected by the Java Runtime Environment:
#
#  SIGBUS (0x7) at pc=0x00007fa6b9f80c18, pid=3819, tid=0x00007fa6cfdb4900
#
# JRE version:  (8.0_131-b11) (build )
# Java VM: Java HotSpot(TM) 64-Bit Server VM (25.131-b11 mixed mode linux-amd64 compressed oops)
# Problematic frame:
# j  java.lang.Object.<clinit>()V+0
#
# Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
#
# If you would like to submit a bug report, please visit:
#   http://bugreport.java.com/bugreport/crash.jsp
#

The fix is

In Cloduera manager UI -> Cluster -> Go to Impala - Configuration tab .

Step 1 :

Impala Daemon properties:

Impala Daemon Environment Advanced Configuration Snippet (Safety Valve)

apply the JAVA_TOOL_OPTIONS=-Xss2m

Steo 2 :

Apply the same for Impala Catalog -

"Impala Catalog Server Environment Advanced Configuration Snippet (Safety Valve)"

before you restart the catalog daemon.

JAVA_TOOL_OPTIONS=-Xss2m

Reason - The crash was caused by a change to the linux kernel that modified the memory layout around JAVAthread stacks.

JIRA - - https://issues.apache.org/jira/browse/DAEMON-363

Please let me know if that works

Re: Impala Catalog Server supervisor permissions

gjaehrling — Thu, 29 Jun 2017 20:34:47 GMT

works, I will accept this as solution

Re: Impala Catalog Server supervisor permissions

csguna — Thu, 29 Jun 2017 23:58:00 GMT

sounds good .

whats ur kernel / os version ?

Re: Impala Catalog Server supervisor permissions

MSattari — Fri, 30 Jun 2017 07:15:37 GMT

It solved the problem.

OS: Ubuntu 14.04.3 (on AWS)

kernel: 3.13.0-121-generic

Thank you for detail explanation.

Re: Impala Catalog Server supervisor permissions

csguna — Fri, 30 Jun 2017 08:53:42 GMT

You Welcome mate 🙂

Re: Impala Catalog Server supervisor permissions

sri1993 — Thu, 06 Jul 2017 07:22:40 GMT

i tried as u say butmy impala catalog server is not started my Cdh is 5.11 using ubutu 16.04 lts kernal version is 4.X generic

Re: Impala Catalog Server supervisor permissions

csguna — Thu, 06 Jul 2017 08:13:26 GMT

could u share the logs .

what is the status of other impala dameons ?

what version of jdk are you using ?

Re: Impala Catalog Server supervisor permissions

sri1993 — Thu, 06 Jul 2017 12:58:24 GMT

yes my impala daemon is working after adding the java_tool_options=-Xss2m but as same to catalog server i add java_tool_options=-Xss2m its not starting

and my java version is

java version "1.8.0_131"
Java(TM) SE Runtime Environment (build 1.8.0_131-b11)
Java HotSpot(TM) 64-Bit Server VM (build 25.131-b11, mixed mode)

Re: Impala Catalog Server supervisor permissions

rroy — Wed, 12 Jul 2017 16:34:38 GMT

Thank you for sharing the solution.

Re: Impala Catalog Server supervisor permissions

csguna — Thu, 13 Jul 2017 05:19:08 GMT

@rroyYou Welcome 🙂

Re: Impala Catalog Server supervisor permissions

bedantaguru — Fri, 14 Jul 2017 09:13:30 GMT

Great it helped me too.