[HIVE-18332] Lock acquisition timeout should show what blocked it

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 1.0.0
• Component/s: Transactions
• Target Version/s: 3.0.0
• Assignee: Unassigned
• Reporter: Eugene Koifman
• Created: 22/Dec/17 19:13
• Updated: 22/Dec/17 19:13

Description

For example

FAILED: Error in acquiring locks: Lock acquisition for LockRequest(component:[LockComponent(type:EXCLUSIVE, level:TABLE, dbname:db_name, tablename:table_name, operationType:NO_TXN)], txnid:0, user:user_name, hostname:myhost.org.com, agentInfo:user_20171218230532_32d0dac8-17d9-4f1c-af90-be7e6f8e0358) timed out after 5502640ms.  LockResponse(lockid:28622126, state:WAITING)

SHOW LOCKS can display what the failed lock was blocked on.
Should try to include it in the error above since Show Locks info will disappear once the "blocked on" lock is released.

Sub-Tasks

• Copy more data into HIVE_LOCKS for better supportability: Open