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From "Apache Spark (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (SPARK-26617) CacheManager blocks during requery
Date Mon, 14 Jan 2019 18:03:00 GMT

     [ https://issues.apache.org/jira/browse/SPARK-26617?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Apache Spark reassigned SPARK-26617:
------------------------------------

    Assignee:     (was: Apache Spark)

> CacheManager blocks during requery
> ----------------------------------
>
>                 Key: SPARK-26617
>                 URL: https://issues.apache.org/jira/browse/SPARK-26617
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 2.4.0
>            Reporter: Dave DeCaprio
>            Priority: Minor
>              Labels: sql
>
> This is related to Spark-26548.  The CacheManager also holds locks in uncaching and
recaching plans that hold the lock while the query optimizer runs.  If the optimizer takes
a long time, then the whole system can block up waiting for the optimization run.



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