[HDFS-12964] Read a opened file timely and effectively when it's being written by other

• Type: Improvement
• Status: Patch Available
• Priority: Minor
• Resolution: Unresolved
• Component/s: hdfs-client
• Assignee: Yang Yun
• Reporter: Yang Yun
• Created: 26/Dec/17 07:55
• Updated: 18/Apr/20 12:51

Description

One thread opens a HDFS file and keeps writing. Another thread opens same file and keeps reading it at the same time, also want to get the newest content of file. that happens in many environments, for example, in some message transmission applications. And it also requires the new content can be read timely and effectively, for there maybe many tasks are working in same time.