[HDFS-7835] make initial sleeptime in locateFollowingBlock configurable for DFSClient.

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.7.0
• Fix Version/s: 2.8.0, 3.0.0-alpha1
• Component/s: hdfs-client
• Hadoop Flags: Reviewed
• Assignee: Zhihai Xu
• Reporter: Zhihai Xu
• Created: 24/Feb/15 21:42
• Updated: 30/Aug/16 01:39
• Resolved: 20/Mar/15 16:49

Description

Make initial sleeptime in locateFollowingBlock configurable for DFSClient.
Current the sleeptime/localTimeout in locateFollowingBlock/completeFile from DFSOutputStream is hard-coded as 400 ms, but retries can be configured by "dfs.client.block.write.locateFollowingBlock.retries". We should also make the initial sleeptime configurable to give user more flexibility to control both retry and delay.