[HDFS-8171] Extend BlockSender to support multiple block data source

• Type: Sub-task
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: datanode
• Assignee: Li Bo
• Reporter: Li Bo
• Created: 17/Apr/15 07:33
• Updated: 19/Jan/17 08:18

Description

Currently BlockSender reads a block from the disk and sends it to a remote datanode. In EC encode/decode work, new blocks are generated by calculation. In order to store these blocks to remote datanodes, we can ask BlockSender to read data from the output of encode/decode calculation.