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Posted to dev@hawq.apache.org by "Sergei Lebedev (JIRA)" <ji...@apache.org> on 2018/06/15 09:27:00 UTC

[jira] [Created] (HAWQ-1624) Make libhdfs3 binary compatible with libhdfs

Sergei Lebedev created HAWQ-1624:
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             Summary: Make libhdfs3 binary compatible with libhdfs
                 Key: HAWQ-1624
                 URL: https://issues.apache.org/jira/browse/HAWQ-1624
             Project: Apache HAWQ
          Issue Type: Improvement
          Components: libhdfs
            Reporter: Sergei Lebedev
            Assignee: Radar Lei


libhdfs3 is almost binary compatible with libhdfs. The missing bits are:

* libhdfs3 does not define hdfsPread which nonetheless can be implemented in terms of hdfsTell, hdfsSeek and hdfsRead;
* hdfsSync is called hdfsHSync in libhdfs3;
* In libhdfs hdfsFlush flushes the internal buffer of the BufferedInputStream; in libhdfs3 it always flushes to HDFS, i.e. it does what hdfsHFlush should do. 



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