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Checkpoint Status on name node

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Explorer

I keep getting the follwoing health error message:

 

The filesystem checkpoint is 22 hour(s), 40 minute(s) old. This is 2,267.75% of the configured checkpoint period of 1 hour(s). Critical threshold: 400.00%. 10,775 transactions have occurred since the last filesystem checkpoint. This is 1.08% of the configured checkpoint transaction target of 1,000,000.

 

What is causing this and how can I get it to stop.

 

Logs:

 

Number of transactions: 8 Total time for transactions(ms): 1 Number of transactions batched in Syncs: 0 Number of syncs: 6 SyncTimes(ms): 132 
Number of transactions: 8 Total time for transactions(ms): 1 Number of transactions batched in Syncs: 0 Number of syncs: 7 SyncTimes(ms): 155 
Finalizing edits file /dfs/nn/current/edits_inprogress_0000000000000021523 -> /dfs/nn/current/edits_0000000000000021523-0000000000000021530
Starting log segment at 21531
Rescanning after 30000 milliseconds
Scanned 0 directive(s) and 0 block(s) in 0 millisecond(s).
list corrupt file blocks returned: 0
list corrupt file blocks returned: 0
BLOCK* allocateBlock: /tmp/.cloudera_health_monitoring_canary_files/.canary_file_2014_10_09-07_29_47. BP-941526827-192.168.0.1-1412692043930 blk_1073744503_3679{blockUCState=UNDER_CONSTRUCTION, primaryNodeIndex=-1, replicas=[ReplicaUnderConstruction[[DISK]DS-a7270ad4-959d-4756-b731-83457af7c6a3:NORMAL|RBW]]}
BLOCK* addStoredBlock: blockMap updated: 192.168.0.102:50010 is added to blk_1073744503_3679{blockUCState=UNDER_CONSTRUCTION, primaryNodeIndex=-1, replicas=[ReplicaUnderConstruction[[DISK]DS-eaca52a9-2713-4901-b978-e331c17800fc:NORMAL|RBW]]} size 0
DIR* completeFile: /tmp/.cloudera_health_monitoring_canary_files/.canary_file_2014_10_09-07_29_47 is closed by DFSClient_NONMAPREDUCE_592472068_72
BLOCK* addToInvalidates: blk_1073744503_3679 192.168.0.102:50010 
BLOCK* BlockManager: ask 192.168.0.102:50010 to delete [blk_1073744503_3679]
Rescanning after 30001 milliseconds
Scanned 0 directive(s) and 0 block(s) in 0 millisecond(s).

 

1 ACCEPTED SOLUTION

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Rising Star
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15 REPLIES 15

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Explorer

No One knows?????

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You could get this error if the secondary or standby namenode is not performing checkpointing correctly. Please verify the health of the following roles:
- Standby Namenode (if HDFS-HA is enabled)
- Secondary Namenode (if HDFS-HA is *not* enabled)
Regards,
Gautam Gopalakrishnan

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Explorer

Hi

 

we enabled HA . we are also getting same below error, How to fix this issue

 

The health test result for NAME_NODE_HA_CHECKPOINT_AGE has become concerning: The filesystem checkpoint is 3 minute(s), 36 second(s) old. This is 6.00% of the configured checkpoint period of 1 hour(s). 2,046,490 transactions have occurred since the last filesystem checkpoint. This is 204.65% of the configured checkpoint transaction target of 1,000,000. Warning threshold: 200.00%.

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Explorer

Any solution this

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Explorer

This is what it states.

 

The filesystem checkpoint is 2 day(s), 59 minute(s) old. This is 4,898.53% of the configured checkpoint period of 1 hour(s). Critical threshold: 400.00%. 23,261 transactions have occurred since the last filesystem checkpoint. This is 2.33% of the configured checkpoint transaction target of 1,000,000.

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Rising Star

It seems like HA settings are enabled.

 

Please check if HDFS>Configuration>"Filesystem Checkpoint Age Monitoring Thresholds"  is specified.  If specified then change it to never as shown below. Save the settings you will not get the message again.

 

 

HA.png

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Mentor

Please never disable that check. Checkpoints are very essential for the HDFS operation, and you do not want to be in a position with checkpoints failing for a technical reason and you never getting notified on that.

 

Instead, look at your Standby or Secondary NN to figure out what the error is, and/or seek help with that identified information.

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Rising Star
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Contributor

what is it the files under snn ?

: )