FAQ
Thanks for sharing the log. It appears your cluster has been upgraded
to CDH5 but the SNN directory was not cleared as part of the upgrade.

Can you stop your SNN, then check your HDFS configuration for the
value of dfs.namenode.checkpoint.dir (typically /dfs/snn if not
changed), visit that path on the SNN host, and clear out all contents
within it (move it to /tmp or so, and later/or delete it). Start your
SNN again, and it should work again now.
On Tue, May 13, 2014 at 5:52 PM, Manish Verma wrote:
Thanks for the reply. Link for the SNN log:

http://pastebin.com/hHqNQ0i2

SNN is not in bad health but still displaying exception in doCheckpoint.

On Monday, May 12, 2014 12:12:04 PM UTC+5:30, Manish Verma wrote:

In CDH5 Cloudera Manager, following is the configuration for Namenode:
File-system Checkpoint Transaction Threshold: 1000000 (Default value)

Filesystem Checkpoint Period : 1 hour (Default value)

After certain time-limit, Name-node moves to concerning health to Bad
Health.

Following is the details:

The filesystem checkpoint is 16 hour(s), 18 minute(s) old. This is
1,630.03% of the configured checkpoint period of 1 hour(s). Critical
threshold: 400.00%. 8,900 transactions have occurred since the last
filesystem checkpoint. This is 0.89% of the configured checkpoint
transaction target of 1,000,000.

Restarting the Namenode resolve the issue for few hours and after 4 hours
again Namenode moves to bad health.

Is there any configuration issue or anything else, kindly suggest.

Thanks
Mv
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