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https://issues.apache.org/jira/browse/HIVE-20416?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gopal V updated HIVE-20416:
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Summary: LLAP: Fail to package LLAP if the Xmx computed is too low (was:
LLAP: Fail to package LLAP if the Xmx computed is 0)
> LLAP: Fail to package LLAP if the Xmx computed is too low
> ---------------------------------------------------------
>
> Key: HIVE-20416
> URL: https://issues.apache.org/jira/browse/HIVE-20416
> Project: Hive
> Issue Type: Bug
> Components: llap
> Reporter: Gopal V
> Priority: Major
>
> {code}
> if (options.getXmx() != -1) {
> // Needs more explanation here
> // Xmx is not the max heap value in JDK8. You need to subtract 50% of
> the survivor fraction
> // from this, to get actual usable memory before it goes into GC
> xmx = options.getXmx();
> long xmxMb = (xmx / (1024L * 1024L));
> conf.setLong(ConfVars.LLAP_DAEMON_MEMORY_PER_INSTANCE_MB.varname,
> xmxMb);
>
> propsDirectOptions.setProperty(ConfVars.LLAP_DAEMON_MEMORY_PER_INSTANCE_MB.varname,
> String.valueOf(xmxMb));
> {code}
> needs a check for the value being so low that start-up (or all queries) will
> fail.
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