[HADOOP-14473] Optimize NativeAzureFileSystem::seek for forward seeks

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Resolved
• Component/s: fs/azure
• Target Version/s: 2.9.0, 3.0.0-alpha4
• Assignee: Rajesh Balamohan
• Reporter: Rajesh Balamohan
• Created: 31/May/17 23:24
• Updated: 06/Jun/17 00:40
• Resolved: 06/Jun/17 00:28

Description

NativeAzureFileSystem::seek() closes and re-opens the inputstream irrespective of forward/backward seek. It would be beneficial to re-open the stream on backward seek.

https://github.com/apache/hadoop/blob/trunk/hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azure/NativeAzureFileSystem.java#L889

Issue Links

• relates to: HADOOP-14478 Optimize NativeAzureFsInputStream for positional reads