[HDFS-10987] Make Decommission less expensive when lot of blocks present. - ASF JIRA

XML

Word

Printable

JSON

Details

Type: Bug
Status: Resolved
Priority: Critical
Resolution: Fixed
Affects Version/s: None
Fix Version/s: 2.8.0, 2.7.4, 3.0.0-alpha2
Component/s: None
Labels:
None

Target Version/s:

2.7.4
Hadoop Flags:

Reviewed

Description

When user want to decommission a node which having 50M blocks ,it could hold the namesystem lock for long time.We've seen it is taking 36 sec.

As we knew during this time, Namenode will not available... As this decommission will continuosly run till all the blocks got replicated,hence Namenode will unavailable.

Attachments

- Sort By Name
- Sort By Date
- Ascending
- Descending

HDFS-10987.patch
08/Oct/16 10:15
2 kB
Brahma Reddy Battula
HDFS-10987-002.patch
12/Oct/16 14:08
3 kB
Brahma Reddy Battula
HDFS-10987-branch-2.7.patch
09/May/17 05:58
3 kB
Brahma Reddy Battula

Activity

People

Assignee:: Brahma Reddy Battula

Reporter:: Brahma Reddy Battula

Votes:: 0 Vote for this issue

Watchers:: 9 Start watching this issue

Dates

Created:: 08/Oct/16 09:36

Updated:: 30/May/17 19:20

Resolved:: 13/Oct/16 20:00