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Namenode failure
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Apache Hadoop
Created on
02-27-2020
03:02 AM
- last edited on
02-27-2020
09:52 AM
by
ask_bill_brooks
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reasons behind name node failure?
Created on 02-27-2020 03:46 AM - edited 02-27-2020 03:49 AM
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There can be various reasons ...starting from
- - Low disk space, Low memory ,
- - No jvm present ,
- - Insufficient resources available on the namenode host,
- - Corrupted fsimage,
- - namenode port already in use
- - Corrupted Edits log file
- - Insufficient permissions to the NN startup user,
- - Incorrect configurations ...
...etc such various kind of reasons. ....
Hence it will be good to first check the NameNode logs to find out what kind of error is it showing and then accordingly it can be troubleshooted.
Created on 02-27-2020 03:46 AM - edited 02-27-2020 03:49 AM
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There can be various reasons ...starting from
- - Low disk space, Low memory ,
- - No jvm present ,
- - Insufficient resources available on the namenode host,
- - Corrupted fsimage,
- - namenode port already in use
- - Corrupted Edits log file
- - Insufficient permissions to the NN startup user,
- - Incorrect configurations ...
...etc such various kind of reasons. ....
Hence it will be good to first check the NameNode logs to find out what kind of error is it showing and then accordingly it can be troubleshooted.
Created 11-25-2020 02:25 AM
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I appreciate your answer, could you please tell me what is the meaning of No JVM present.
And what is the default location of the Namenode log file?
Thank you,
