Support Questions

gjaehrling · ‎06-27-2017

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.

csguna · ‎06-29-2017

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 .

Search

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

View solution in original post

csguna · ‎07-06-2017

could u share the logs .

what is the status of other impala dameons ?

what version of jdk are you using ?

sri1993 · ‎07-06-2017

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)

rroy · ‎07-12-2017

Thank you for sharing the solution.

csguna · ‎07-12-2017

@rroyYou Welcome 🙂

bedantaguru · ‎07-14-2017

Great it helped me too.

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Support Questions

Impala Catalog Server supervisor permissions