[KUDU-1906] Java client hangs in scanner nextRows call

• Type: Bug
• Status: Resolved
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 1.3.0
• Fix Version/s: 1.3.0
• Component/s: client
• Target Version/s: 1.3.0
• Code Review: https://gerrit.cloudera.org/#/c/6239/
• Assignee: Todd Lipcon
• Reporter: Todd Lipcon
• Created: 03/Mar/17 01:58
• Updated: 04/Mar/17 02:15
• Resolved: 04/Mar/17 02:15

Description

Running RowCounter against a reasonably small table, I see map tasks occasionally hanging waiting for a response from a scanner. It seems to be correlated with "read timeouts" in the logs. I'm guessing we are not handling something properly in this case.