You are running a Hadoop cluster with a NameNode on host mynamenode, a secondary
NameNode on host mysecondarynamenode and several DataNodes.
Which best describes how you determine when the last checkpoint happened?
A.
Execute hdfs namenode –report on the command line and look at the Last Checkpoint
information
B.
Execute hdfs dfsadmin –saveNamespace on the command line which returns to you the last
checkpoint value in fstime file
C.
Connect to the web UI of the Secondary NameNode (http://mysecondary:50090/) and look at
the “Last Checkpoint” information
D.
Connect to the web UI of the NameNode (http://mynamenode:50070) and look at the “Last
Checkpoint” information
Explanation:
https://www.inkling.com/read/hadoop-definitive-guide-tom-white-3rd/chapter-10/hdfs
Correct answer is C …
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Is it B ? Because NameNode can be configured without a secondary ?
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C
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The answer is C and D
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http://blog.cloudera.com/blog/2014/03/a-guide-to-checkpointing-in-hadoop/
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Correct answer is c:
Check
http://secondarynamenode:50090/status.jsp ( This shows the last checkpoint status)
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C
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C
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Correct Ans is C
Please refer below link for detail
https://community.hortonworks.com/questions/30726/where-can-i-find-the-time-since-the-last-checkpoin.html
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option B is to enforce or create checkpoint manually .
i incline to C
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NameNode UI also shows checkpoint information:
Last Checkpoint Time Mon Jan 09 13:21:01 -0500 2017
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Correct answer is both C and D
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Option C is correct
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Raushan,tonight i have scheduled my exam..can you please suggest whether all the answer of this website is correct or not
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Hi Rajneesh,
How was your exam? I know many answers are incorrect but did the questions come from this dump? Appreciate any guidance!
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