[KUDU-1272] Bad error status if RPC call is made with deadline in the past

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.6.0
• Fix Version/s: 0.7.0
• Component/s: rpc
• Target Version/s: 0.7.0
• Code Review: http://gerrit.cloudera.org:8080/#/c/1986/
• Assignee: Adar Dembo
• Reporter: Todd Lipcon
• Created: 24/Nov/15 21:25
• Updated: 02/Feb/16 21:05
• Resolved: 02/Feb/16 21:05

Description

In many places, we use a deadline to calculate a timeout. If the deadline has already passed when we submit the RPC, we get an error like:

I1124 13:21:39.261135 15815 runtime-state.cc:228] Error from query d24cf508e3437ab5:1ac8794be69d81a9: Unable to open scanner: Timed out: Scan RPC to 10.17.223.30:7050 timed out after -0.181s

which doesn't make a lot of sense. We should improve the error in this case to be more understandable.