[HDFS-10769] BlockIdManager.clear doesn't reset the counter for blockGroupIdGenerator

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.0.0-alpha1, 3.0.0-beta1
• Fix Version/s: 3.0.0-alpha2
• Component/s: hdfs
• Labels: newbie
• Hadoop Flags: Reviewed
• Tags: erasurecode
• Assignee: Yiqun Lin
• Reporter: Ewan Higgs
• Created: 17/Aug/16 12:41
• Updated: 27/Oct/16 09:02
• Resolved: 27/Oct/16 08:50

Description

BlockIdManager.clear resets the block id generator for contiguous blocks but not for striped blocks:

  void clear() {
    legacyGenerationStamp.setCurrentValue(GenerationStamp.LAST_RESERVED_STAMP);
    generationStamp.setCurrentValue(GenerationStamp.LAST_RESERVED_STAMP);
    getBlockIdGenerator().setCurrentValue(SequentialBlockIdGenerator
      .LAST_RESERVED_BLOCK_ID);
    legacyGenerationStampLimit = HdfsConstants.GRANDFATHER_GENERATION_STAMP;
  }

This should have:

getBlockGroupIdGenerator().setCurrentValue(Long.MIN_VALUE);