[jira] [Commented] (SINGA-214) Add LMDBReader and LMDBWriter for LMDB

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    [ https://issues.apache.org/jira/browse/SINGA-214?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15358659#comment-15358659 ] 

ASF subversion and git services commented on SINGA-214:
-------------------------------------------------------

Commit bcda737c99ce0ca1a63c8f0488fae138e54b5d0e in incubator-singa's branch refs/heads/dev from [~Xiangrui]
[ https://git-wip-us.apache.org/repos/asf?p=incubator-singa.git;h=bcda737 ]

SINGA-214 Add LMDBReader and LMDBWriter for LMDB

Add LMDBReader and LMDBWriter for LMDB. The classes are modified from db_lmdb.cpp and db_lmdb.hpp in Caffe.
Need to swith "USE_LMDB" ON when using these two classes.

(Jul 1) Add SeekToFirst to all IO classes;
LMDB does not support checking empty and duplicate keys, Check empty duplicate keys in LMDBWriter.


> Add LMDBReader and LMDBWriter for LMDB
> --------------------------------------
>
>                 Key: SINGA-214
>                 URL: https://issues.apache.org/jira/browse/SINGA-214
>             Project: Singa
>          Issue Type: Bug
>            Reporter: Xiangrui
>
> Add LMDBReader and LMDBWriter for LMDB. The classes are modified from db_lmdb.cpp and db_lmdb.hpp in Caffe.
> Todo: LMDB does not support checking empty and duplicate keys, may support by us later.



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