* update backend in cluster because of forgeting to remove backend' id when drop backend or decommission in latest version
* select wrong rollup
* update backend in cluster because of forgeting to remove backend' id when drop backend or decommission in latest version
* modify modify the way of PartitionDesc analysis. fix set global variables bug
* add export job statitic proc
* merge from baidu/master
* change MASTER_CLIENT_TIMEOUT
* fix right outer join with null column
In case that we want to clone a replica with version X, but a replica with stale version(less than X) is already in the dest backend.
This will leads the clone task to success directly, which is not what we expected.
Adding version check when doing the clone task and try to drop the replica with stale version
* cluster can acquire more backends in same host
* compile failed
* count* 's subquery with orderby exec error
* modify show processlist result and check name format error
* merge log and add cancel cluster for root, show backends for users in cluster
* returns null when the param does not match
* update UpdateClusterAndBackends to BackendIdsUpdateInfo
* correct Licenses
* modify thirdparty/build-thirdparty.sh to fix compilation bug of thrift. (#10)
update pre-compile binaries.
* fix export LD_LIBRARY_PATH in build-thirdparty.sh
* fix export LD_LIBRARY_PATH in build-thirdparty.sh
* fix missing cluster name bug when get load job info via http.
fix compilation bugs in fe unit test
