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Posted to hdfs-dev@hadoop.apache.org by "Vinay (JIRA)" <ji...@apache.org> on 2013/07/25 14:35:50 UTC
[jira] [Created] (HDFS-5031) BlockScanner scans the block multiple
times and on restart scans everything
Vinay created HDFS-5031:
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Summary: BlockScanner scans the block multiple times and on restart scans everything
Key: HDFS-5031
URL: https://issues.apache.org/jira/browse/HDFS-5031
Project: Hadoop HDFS
Issue Type: Bug
Components: datanode
Affects Versions: 3.0.0, 2.1.0-beta
Reporter: Vinay
Assignee: Vinay
Priority: Blocker
BlockScanner scans the block twice, also on restart of datanode scans everything.
Steps:
1. Write blocks with interval of more than 5 seconds. write new block on completion of scan for written block.
Each time datanode scans new block, it also scans, previous block which is already scanned.
Now after restart, datanode scans all blocks again.
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