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From "Carter Shanklin (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-12220) LLAP: Usability issues with hive.llap.io.cache.orc.size
Date Wed, 21 Oct 2015 15:46:27 GMT
Carter Shanklin created HIVE-12220:
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             Summary: LLAP: Usability issues with hive.llap.io.cache.orc.size
                 Key: HIVE-12220
                 URL: https://issues.apache.org/jira/browse/HIVE-12220
             Project: Hive
          Issue Type: Bug
          Components: Hive
    Affects Versions: llap
            Reporter: Carter Shanklin


In the llap-daemon site you need to set, among other things,

llap.daemon.memory.per.instance.mb
and
hive.llap.io.cache.orc.size

The use of hive.llap.io.cache.orc.size caused me some unnecessary problems, initially I entered
the value in MB rather than in bytes. Operator error you could say but I look at this as a
fraction of the other value which is in mb.

Second, is this really tied to ORC? E.g. when we have the vectorized text reader will this
data be cached as well? Or might it be in the future?

I would like to propose instead using hive.llap.io.cache.size.mb for this setting.



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