Document how to change log location

[exalate-issue-sync]

can we please add this info to sw docs .

ref - https://support.h2o.ai/helpdesk/tickets/91640
from [~accountid:557058:389d9607-5bd8-4611-8c6a-755fe9295223]

{code:java}
We offload logs into temporary space of hadoop job defined by spark.yarn.app.container.log.dir.

Furthermore, You can control log level via following Sparkling water properties:

• spark.ext.h2o.node.log.level (executor log level)
• spark.ext.h2o.client.log.level (client log level)
  So you can setup these properties to ERROR level to avoid printing too many messages into logs.

Furthermore, You need to control log level of spark as well
via $SPARK_HOME/conf/log4j.properties
regaring log4j.properties, for example -

Set everything to be logged to the console

log4j.rootCategory=ERROR, console
{code}

[exalate-issue-sync]

Angela Bartz commented: Note that some of this is already documented:

{code}
Furthermore, You can control log level via following Sparkling water properties:

• spark.ext.h2o.node.log.level (executor log level)
• spark.ext.h2o.client.log.level (client log level)
  So you can setup these properties to ERROR level to avoid printing too many messages into logs
  {code}
  See: https://github.com/h2oai/sparkling-water/blob/master/doc/configuration/configuration_properties.rst

{code}
Furthermore, You need to control log level of spark as well
via $SPARK_HOME/conf/log4j.properties
regaring log4j.properties, for example -

Set everything to be logged to the console

log4j.rootCategory=ERROR, console
{code}
See: https://github.com/h2oai/sparkling-water/blob/master/doc/tutorials/change_log_level.rst

When the SW help system is completed, then this information might be easier for users to navigate.

[DinukaH2O]

JIRA Issue Migration Info

Jira Issue: SW-678
Assignee: Jakub Hava
Reporter: Nidhi Mehta
State: Resolved
Fix Version: 2.0.23
Attachments: N/A
Development PRs: Available

Linked PRs from JIRA

#545

[hasithjp]

JIRA Issue Migration Info Cont'd

Jira Issue Created Date: 2018-01-16T11:41:48.333-0800