The key ______ command, – Which is traditionally a bash script – is also re-implemented as Hadoop.cmd.
Hadoop
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Start
Had
Hadstrat
Tag: Hadoop HDFS
Which of the following individual components are included on HDInsight clusters?
Which of the following individual components are included on HDInsight clusters?
All Options are Correct
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Hive
Pig
Oozie
Point out the wrong Statement.
Point out the wrong Statement.
All Options are Correct
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The other flavor of HDInsight interactive console is based on JavaScript
Microsoft and HortonWorks have re-implemented the key binaries a executables
The distribution consists of Hadoop 1.1.0, Pig 0.9.3, Mahout 0.5 and Sqoop 1.4.2
In Hadoop ______ go to the Hadoop distribution directory for HDInsight.
In Hadoop ______ go to the Hadoop distribution directory for HDInsight.
Command Line
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Shell
Compaction
None of the Option is Correct
HDFS Federation is useful for the cluster size of:
HDFS Federation is useful for the cluster size of:
> 5000 nodes
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>900 nodes
>500 nodes
> 3500 nodes
The HDFS file system is temporarily unavailable whenever the HDFS ________ is down.
The HDFS file system is temporarily unavailable whenever the HDFS ________ is down.
NameNode
Excellent ! Your Answer is Correct. Explanation: When the HDFS NameNode is restarted it recovers its metadata.
DataNode
ActionNode
None of the Option is Correct
_________ stores its metadata on multiple disks that typically include a non-local file server.
_________ stores its metadata on multiple disks that typically include a non-local file server.
NameNode
Excellent ! Your Answer is Correct. Explanation: HDFS tolerates failures of storage servers (called DataNodes) and its disks.
DataNode
ActionNode
None of the Option is Correct
HDFS, by default, replicates each data block _____ times on different nodes and on at least ____ racks.
HDFS, by default, replicates each data block _____ times on different nodes and on at least ____ racks.
3, 2
Excellent ! Your Answer is Correct. Explanation: HDFS has a simple yet robust architecture that was explicitly designed for data reliability in the face of faults and failures in disks, nodes and networks.
1, 2
2, 3
All Options are Correct
__________ support storing a copy of data at a particular instant of time.
__________ support storing a copy of data at a particular instant of time.
Snapshots
Excellent ! Your Answer is Correct. Explanation: One usage of the snapshot feature may be to roll back a corrupted HDFS instance to a previously known good point in time.
Datanots
Data Image
All Options are Correct
Point out the wrong statement.
Point out the wrong statement.
HDFS is designed to support small files only
Excellent ! Your Answer is Correct. Explanation: HDFS is designed to support very large files.
Any update to either the FsImage or EditLog causes each of the FsImages and EditLogs to get updated synchronously
NameNode can be configured to support maintaining multiple copies of the FsImage and EditLog
None of the Option is Correct