[jira] Created: (HDFS-1186) 0.20: DNs should interrupt writers at start of recovery

[Todd Lipcon (JIRA)]

0.20: DNs should interrupt writers at start of recovery
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 Key: HDFS-1186
 URL: https://issues.apache.org/jira/browse/HDFS-1186
 Project: Hadoop HDFS
  Issue Type: Bug
  Components: data-node
Affects Versions: 0.20-append
Reporter: Todd Lipcon
Assignee: Todd Lipcon
Priority: Blocker


When block recovery starts (eg due to NN recovering lease) it needs to 
interrupt any writers currently writing to those blocks. Otherwise, an old 
writer (who hasn't realized he lost his lease) can continue to write+sync to 
the blocks, and thus recovery ends up truncating data that has been sync()ed.

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[jira] Created: (HDFS-1187) Modify fetchdt to allow renewing and canceling token

[Owen O'Malley (JIRA)]

Modify fetchdt to allow renewing and canceling token


 Key: HDFS-1187
 URL: https://issues.apache.org/jira/browse/HDFS-1187
 Project: Hadoop HDFS
  Issue Type: Improvement
  Components: tools
Reporter: Owen O'Malley
Assignee: Owen O'Malley
 Attachments: fetchdt.patch

I would like to extend fetchdt to allow renewing and canceling tokens.

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