I don't think this should be closed until we have tested this
hypothesis.
On Sep 5, 2007, at 4:25 PM, eric baldeschwieler (JIRA) wrote:
[ https://issues.apache.org/jira/browse/HADOOP-1704?
page=com.atlassian.jira.plugin.system.issuetabpanels:comment-
tabpanel#action_12525255 ]
eric baldeschwieler commented on HADOOP-1704:
---------------------------------------------
so is this a real issue, or can we close it?
Sounds like a hypothetical concern that has never been observed.
Throttling for HDFS Trash purging
---------------------------------
Key: HADOOP-1704
URL: https://issues.apache.org/jira/browse/
HADOOP-1704
Project: Hadoop
Issue Type: Bug
Components: dfs
Reporter: dhruba borthakur
When HDFS Trash is enabled, deletion of a file/directory results
in it being moved to the "Trash" directory. The "Trash" directory
is periodically purged by the Namenode. This means that all files/
directories that users deleted in the last Trash period, gets
"really" deleted when the Trash purging occurs. This might cause a
burst of file/directory deletions.
The Namenode tracks blocks that belonged to deleted files in a
data structure named "RecentInvalidateSets". There is a
possibility that Trash purging may cause this data structure to
bloat, causing undesireable behaviour of the Namenode.
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