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Posted to issues@hawq.apache.org by "Zuoyan Qin (Jira)" <ji...@apache.org> on 2020/10/21 06:24:00 UTC
[jira] [Created] (HAWQ-1769) fix DirectoryIterator of libhdfs
Zuoyan Qin created HAWQ-1769:
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Summary: fix DirectoryIterator of libhdfs
Key: HAWQ-1769
URL: https://issues.apache.org/jira/browse/HAWQ-1769
Project: Apache HAWQ
Issue Type: Bug
Components: libhdfs
Reporter: Zuoyan Qin
Assignee: Ruilong Huo
Fix For: 3.0.0.0
The DirectoryIterator of libhdfs has some problems now:
* even if the `getListing` RPC returns "remainingentries = 0", the following invoking of DirectoryIterator::hasNext() may still trigger an *unnecessary* `getListing` RPC to the server.
* moreover, in the above case, if the server returns a non-empty list (so it is a server bug because the server should return an empty list) when the client send an unnecessary `getListing` RPC, then DirectoryIterator::hasNext() will return true, and we will enter endless loop.
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