Dir lock#885

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yvxiang wants to merge 29 commits intobaidu:masterfrom

yvxiang:dir_lock2

Commits on Mar 10, 2017

Add dir lock support
yangce
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Add dir lock implementation
yangce
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Remove redudant interface
yangce
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Fix indent
yangce
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Commits on Mar 13, 2017

Check whether blocks closed in LockDir
yangce
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Rename status code
yangce
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Smallfix
yangce
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Add ListAllBlocks for namespace
yangce
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Add CheckBlocksClosed for BlockMapping
yangce
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Add GetUUID and ut for CheckBlocksClosed
yangce
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Add Get/SetDirLockStatus
yangce
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Commits on Mar 14, 2017

Bugfix for ListAllBlocks & SetDirLockStatus
yangce
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Add ut for Get/SetDirLockStatus
yangce
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Add log
yangce
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Use GetFromStore
yangce
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Commits on Mar 15, 2017

Record lock holder in FileInfo
yangce
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Check dir lock when create or delete file
yangce
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Add ut for Rename
yangce
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Record uuid for dir lock & fix ut
yangce
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Commits on Mar 16, 2017

Add CheckDirLockPermission & ut
yangce
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Add ut for CheckDirLockPermission
yangce
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Add uuid in proto
yangce
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Set uuid in OpenFile
yangce
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Commits on Mar 20, 2017

Fix ut
yangce
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Sync dir lock to secondary nameservers
yangce
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Commits on Mar 21, 2017

Merge branch 'upstream' into dir_lock2
yangce
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Add block_mapping_manager_test.cc
yangce
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Commits on Mar 22, 2017

Support timeout in LockDirectory
yangce
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Support force unlock dir
yangce
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