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https://issues.apache.org/jira/browse/TRAFODION-2091?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sandhya Sundaresan closed TRAFODION-2091.
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> hdfsFS filesystem usage causies abnormal behavior in Trafodion
> ---------------------------------------------------------------
>
> Key: TRAFODION-2091
> URL: https://issues.apache.org/jira/browse/TRAFODION-2091
> Project: Apache Trafodion
> Issue Type: Bug
> Components: sql-general
> Affects Versions: 2.1-incubating
> Reporter: Sandhya Sundaresan
> Assignee: Sandhya Sundaresan
> Priority: Major
>
> Several components use the libhdfs API to perform operations on hdfs files in
> Trafodion. Some places use the JNI API as well to access hdfs.
> The inconsistency observed was ehen one component cached and kept the hdfsFS
> hande for it's use another part of the code would perform a "close" or a
> dsconnect and prematurely close the hdfsFS handle which is currently being
> used. The reason is that the hdfs layer seems to cache the hdfsFS handle
> underneathThe solution now is to keep a list of hdfsFS handles at the global
> context level. All disconnect calls and JNI close calls are remmoved. The
> hdfHS handles will get cleaned up either at context destructor time or at
> endSession time.
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