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From "Sergey Shelukhin (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-12172) LLAP: Cache metrics are incorrect
Date Wed, 14 Oct 2015 18:39:05 GMT

     [ https://issues.apache.org/jira/browse/HIVE-12172?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sergey Shelukhin updated HIVE-12172:
------------------------------------
    Assignee: Prasanth Jayachandran  (was: Sergey Shelukhin)

> LLAP: Cache metrics are incorrect
> ---------------------------------
>
>                 Key: HIVE-12172
>                 URL: https://issues.apache.org/jira/browse/HIVE-12172
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Siddharth Seth
>            Assignee: Prasanth Jayachandran
>
> CacheCapacityUsed goes negative, CacheCapacityRemaining is a lot higher than the original
cache size.
> This was while using the LRFU cache policy.
> Reproduces when running a query which reads far too much data to store in cache.
> {code}
> name: "Hadoop:service=LlapDaemon,name=LlapDaemonCacheMetrics-",
> tag.ProcessName: "LlapDaemon",
> tag.SessionId: "37c590b9-cccd-4b81-8b5f-36b3659c3454",
> CacheCapacityRemaining: 15958381947264,
> CacheCapacityTotal: 10737418240,
> CacheCapacityUsed: -15947644529024,
> CacheReadRequests: 5837,
> CacheRequestedBytes: 28996627387,
> CacheHitBytes: 8266607002,
> CacheAllocatedArena: 79,
> CacheNumLockedBuffers: 315,
> CacheHitRatio: 0.28508857
> {code}



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