Gour Saha created SLIDER-891:
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Summary: Add ability to set Slider AM launch environment during
cluster create/start
Key: SLIDER-891
URL: https://issues.apache.org/jira/browse/SLIDER-891
Project: Slider
Issue Type: Bug
Components: appmaster, client
Reporter: Gour Saha
It might be necessary to set env variables like *LD_LIBRARY_PATH* after YARN
creates the AM container and before the Slider AM process is started. It should
be possible to append to such variables from the client side, when the
application instance is created or started from a stopped state.
This is beneficial in a cluster which undergoes upgrade and most likely has
newer versions of native libraries.
All applications which were started prior to the upgrade, should be able to
continue to use the same versions of native libraries it was started with, if
Slider AM failover occurs after the upgrade. The failover AM should not get the
newer versions of the native libraries just because the cluster underwent an
upgrade.
The variable {{slider.am.launch.env}} will be created which can be set in
slider-client.xml with a format as below -
{noformat}
<property>
<name>slider.am.launch.env</name>
<value>LD_LIBRARY_PATH=/usr/hadoop/lib/native:/usr/hadoop/lib/native/Linux-amd64-64,PATH=/usr/hadoop/bin</value>
</property>
{noformat}
Multiple variables should be comma {{,}} separated. Each variable's name and
value should be separated by {{=}} character.
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