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From "Himanshu Vashishtha (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-8288) HBaseFileSystem: Refactoring and correct semantics for createPath methods
Date Mon, 08 Apr 2013 05:37:15 GMT
Himanshu Vashishtha created HBASE-8288:
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             Summary: HBaseFileSystem: Refactoring and correct semantics for createPath methods
                 Key: HBASE-8288
                 URL: https://issues.apache.org/jira/browse/HBASE-8288
             Project: HBase
          Issue Type: Bug
          Components: Filesystem Integration
    Affects Versions: 0.94.6
            Reporter: Himanshu Vashishtha
            Assignee: Himanshu Vashishtha
             Fix For: 0.94.7


This jira is for two issues I see in the HBaseFileSystem class:
1) Load testing on a 7 node cluster using ycsb insert workload shows that static initialization
of conf properties results in a slightly better throughput. Though the initialization uses
HBaseConfiguration.create() call which is expensive (and I tried to avoid that in its first
version), this class is used for most of the filesystem class, and had to invoke an additional
checkAndSetXX call before making the fs call because it is not certain whether the retry properties
are set or not. Having initialize them in static block removes that limitation.

2) Correct semantics for CreatePathXXX method. In case the overwrite flag is false and file
already exists, underlying fs throws an exception. It should be re-thrown to the caller.

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