[ACCUMULO-3963] Incremental backoff on inability to write to HDFS

• Type: Bug
• Status: Resolved
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 1.7.0
• Fix Version/s: 1.7.1, 1.8.0
• Component/s: tserver
• Labels: release_notes
• Assignee: Josh Elser
• Reporter: Josh Elser
• Created: 14/Aug/15 20:26
• Updated: 31/Oct/15 19:40
• Resolved: 31/Oct/15 19:40

Description

ACCUMULO-2480 added some support to kill the tserver if HDFS is unavailable after a number of checks. ACCUMULO-3937 added some configuration values to loosen this.

We still only sleep for a static 100ms after every failure. This makes the default 15 attempts over 10 seconds a bit misleading as it will kill itself after 1.5 seconds not 10.

I'm thinking that this should really be more like a 30-60s wait period out of the box. Anything less isn't really going to insulate operators from transient HDFS failures (due to services being restarted or network partitions).

Issue Links

• is related to: ACCUMULO-2480 ha fail-failover failure