merge with zy.
add new DiskManager.java and modify alter table renameClo function.
modify diskmanager.java in newms pacakage.
Merge remote-tracking branch 'origin/newms_zy' into newms_zqh
Merge remote-tracking branch 'origin/newms_zqh' into newms_zy
Merge remote-tracking branch 'origin/newms_zy' into newms_zqh
implement some RawStore method for DiskManager; update jedis
Merge remote-tracking branch 'origin/newms_zy' into newms_zqh
add
implement findFiles,findVoidFiles
merge with zqh
fix error in findFiles(), fineVoidFiles()
modify TimeLimitedCacheMap: fix error when calculate elapsedTime, update timeMap in get()
use IMetaStoreClient instead of the MetaStoreClient in iie.jar, rm iie.jar
fix some Exception
Merge branch 'newms_zy' of github.com:bd-group/metastore into newms_zy
merge from zy