Alex Rodoni created IMPALA-6959:
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Summary: Update HAProxy configuration sample for Impala
Key: IMPALA-6959
URL: https://issues.apache.org/jira/browse/IMPALA-6959
Project: IMPALA
Issue Type: Task
Components: Docs
Affects Versions: Impala 2.12.0
Reporter: Alex Rodoni
Assignee: Alex Rodoni
Our doc regarding setting up Impala HA using HAProxy:
[https://www.cloudera.com/documentation/enterprise/latest/topics/impala_proxy.html]
it uses the following timeout values:
{code:java}
contimeout 5000
clitimeout 50000
srvtimeout 50000
{code}
Two issues here:
1. contimeout, clitimeout and srvtimeout are old, the new config names should be
{code:java}
timeout connect
timeout client
timeout server
{code}
The outdated config names shows that our docs are also outdated
2. the timeout value of 50000, which is 50 seconds is too low, it will cause
impala client to timeout all the time, the correct value should be at least 1
hour to start with:
{code:java}
timeout client 3600s
timeout server 3600s
{code}
And we should also mention that these values should be dependant on how users
use the cluster and how long their queries are running. It is NOT one config
fits for all case.
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