[HDFS-9867] Missing block exception should carry locatedBlocks information

• Type: Sub-task
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 3.0.0-alpha1
• Component/s: erasure-coding, hdfs-client
• Hadoop Flags: Reviewed
• Assignee: Mingliang Liu
• Reporter: Mingliang Liu
• Created: 27/Feb/16 04:07
• Updated: 12/May/16 18:18
• Resolved: 28/Feb/16 23:00

Description

When more than parityBlkNum internal blocks are missing, StripeReader throws IOException. Sample error message like:

java.io.IOException: 5 missing blocks, the stripe is: Offset=44695552, length=65536, fetchedChunksNum=0, missingChunksNum=5

According to our recent experience, it'd be useful for debugging and diagnosing to dump the current block group information.