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https://issues.apache.org/jira/browse/IMPALA-7173?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16525840#comment-16525840
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Sudarshan commented on IMPALA-7173:
---
[~mikesbrown] thanks. Not sure if
[http://impala.apache.org/docs/build/html/topics/impala_proxy.html] is already
updated or will be updated.
However, currently it has the following. This Jira is about "listen impala
:25003" section not having "check" at the end of each server.
{code:java}
# This is the setup for Impala. Impala client connect to
load_balancer_host:25003.
# HAProxy will balance connections among the list of servers listed below.
# The list of Impalad is listening at port 21000 for beeswax (impala-shell) or
original ODBC driver.
# For JDBC or ODBC version 2.x driver, use port 21050 instead of 21000.
listen impala :25003
mode tcp
option tcplog
balance leastconn
server symbolic_name_1 impala-host-1.example.com:21000
server symbolic_name_2 impala-host-2.example.com:21000
server symbolic_name_3 impala-host-3.example.com:21000
server symbolic_name_4 impala-host-4.example.com:21000
# Setup for Hue or other JDBC-enabled applications.
# In particular, Hue requires sticky sessions.
# The application connects to load_balancer_host:21051, and HAProxy balances
# connections to the associated hosts, where Impala listens for JDBC
# requests on port 21050.
listen impalajdbc :21051
mode tcp
option tcplog
balance source
server symbolic_name_5 impala-host-1.example.com:21050 check
server symbolic_name_6 impala-host-2.example.com:21050 check
server symbolic_name_7 impala-host-3.example.com:21050 check
server symbolic_name_8 impala-host-4.example.com:21050 check
{code}
> [DOCS] Update load balancer configuration in our docs
> -
>
> Key: IMPALA-7173
> URL: https://issues.apache.org/jira/browse/IMPALA-7173
> Project: IMPALA
> Issue Type: Documentation
> Components: Docs
>Affects Versions: Impala 2.11.0
>Reporter: Laurel Hale
>Assignee: Laurel Hale
>Priority: Minor
> Fix For: Impala 2.12.0
>
>
> This Jira is filed on behalf of Sudarshan Sharma:
> 1) Please refer following documentation at
> [http://impala.apache.org/docs/build/html/topics/impala_proxy.html#tut_proxy]
> .
> 2) Example configuration has following.
> listen impala :25003
> mode tcp
> option tcplog
> balance leastconn
> server symbolic_name_1 impala-host-1.example.com:21000
> server symbolic_name_2 impala-host-2.example.com:21000
> server symbolic_name_3 impala-host-3.example.com:21000
> server symbolic_name_4 impala-host-4.example.com:21000
> **
> Request :-
> **
> There should be a "check" keyword at the end of each line that begins with
> "server". Can we please add? (most users are likely to copy - paste and
> replication and hence it would be best to keep it correct)
> This is correct for the following pool mentioned later in the configuration.
>
> listen impalajdbc :21051
> mode tcp
> option tcplog
> balance source
> server symbolic_name_5 impala-host-1.example.com:21050 check
> server symbolic_name_6 impala-host-2.example.com:21050 check
> server symbolic_name_7 impala-host-3.example.com:21050 check
> server symbolic_name_8 impala-host-4.example.com:21050 check
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