[FLUME-2229] Backoff period gets reset too often in OrderSelector

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.4.0
• Fix Version/s: 1.5.0
• Assignee: Hari Shreedharan
• Reporter: Hari Shreedharan
• Created: 30/Oct/13 21:50
• Updated: 04/May/14 04:18
• Resolved: 03/Dec/13 20:38

Description

In OrderSelector.java, the backoff period is calculated by using the number of sequential failures seen to the same host. Since CONSIDER_SEQUENTIAL_RANGE is set to 2 seconds, if the host is not selected for connection within 2 seconds of the backoff period ending, the sequential failures variable is reset and backoff period is not increased.

We must increase the value of CONSIDER_SEQUENTIAL_RANGE so that the backoff is not reset too often.

Issue Links

• is related to: FLUME-1488 Load Balancing RPC client should support exponential backoff of failed nodes