[HDFS-8195] Erasure coding: Fix file quota change when we complete/commit the striped blocks

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: HDFS-7285
• Fix Version/s: HDFS-7285
• Target Version/s: HDFS-7285
• Hadoop Flags: Reviewed
• Assignee: Takuya Fukudome
• Reporter: Takuya Fukudome
• Created: 21/Apr/15 02:20
• Updated: 30/Sep/15 19:38
• Resolved: 13/May/15 06:11

Description

Fix file quota change when converting a file with striped blocks from complete/under-construction to under-construction/complete state. When we add a new block (FSDirectory#addBlock) we update the quota using the full block size (since we do not know how much data the user will write to
the new block), and when we complete/commit the block, the quota is updated based on the block's real size (FSNamesystem#commitOrCompleteLastBlock). Currently these two places only support contiguous blocks (using INodeFile#getPreferredBlockSize as the full block size). We should update them for striped blocks.