adding patch from cloudera 4.3 Fix scanner retry logic adding a call sequence Taken from HBASE-5974 , 0.94 version
adding patch from cloudera 4.3 Limit the number of retries in case of timeout Original commit taken from: HBASE-7070 Scanner may retry forever after HBASE-5974
adding patch from cloudera 4.3 DB-1498 applying patch from Apache HBASE-8143 (+1 squashed commit)
Squashed commits:
[e78072a] adding patch from cloudera 4.3 DB-1498 applying patch from Apache HBASE-8143