[HDFS-7994] Detect if resevered EC Block ID is already used - ASF JIRA

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Details

Type: Sub-task
Status: Resolved
Priority: Major
Resolution: Fixed
Affects Version/s: None
Fix Version/s: HDFS-7285
Component/s: namenode
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Reviewed

Description

Since random block IDs were supported by some early version of HDFS, the block ID reserved for EC blocks could be already used by some existing blocks in a cluster. During NameNode startup, it detects if there are reserved EC block IDs used by non-EC blocks. If it is the case, NameNode will do an additional blocksMap lookup when there is a miss in a blockGroupsMap lookup.

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HDFS-7994_002.patch
16/Apr/15 08:08
19 kB
Hui Zheng
HDFS-7994_001.patch
14/Apr/15 02:15
9 kB
Hui Zheng

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Assignee:: Hui Zheng

Reporter:: Tsz-wo Sze

Votes:: 0 Vote for this issue

Watchers:: 4 Start watching this issue

Dates

Created:: 26/Mar/15 07:08

Updated:: 30/Sep/15 19:38

Resolved:: 16/Apr/15 20:17