to control hdfs replication factor, which configuration file is used?

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1 for clusters < four nodes. 2 for clusters < … You have to select the right answer to a question. c) core-site.xml. Replication is nothing but making a copy of something and the number of times you make a copy of that particular thing can be expressed as it’s Replication Factor. Now while I am trying to upload a new file it is replicating the files block in both data nodes but it still consider the 3rd replication as a under replicated blocks.How to resolve this ? Apache Sqoop can also be used to move the data from HDFS to RDBMS. If you wish to learn Hadoop from top experts, I recommend this Hadoop Certification course by Intellipaat. b) False. The value is 3 by default.. To change the replication factor, you can add a dfs.replication property settings in the hdfs-site.xml configuration file of Hadoop: dfs.replication 1 Replication factor. ( D) a) mapred-site.xml. d) hdfs-site.xml. The default replication factor in HDFS is controlled by the dfs.replication property.. Amazon EMR automatically calculates the replication factor based on cluster size. b) yarn-site.xml. • For each block stored in HDFS, there will be n-1 duplicated blocks distributed across the cluster. Apache Sqoop is used to import the structured data from RDBMS such as MySQL, Oracle, etc. I have setup a 2 nodes HDFS cluster and given replication factor 2. How to configure Replication in Hadoop? Hdfs-site.xml is a client configuration file needed to access HDFS — it needs to be placed on every node that has some HDFS role running. 22. This Hadoop Test contains around 20 questions of multiple choice with 4 options. If the replication factor is 10 then we need 10 slave nodes are required. 21. • The replication factor is a property that can be set in the HDFS configuration file that will allow you to adjust the global replication factor for the entire cluster. Name the parameter that controls the replication factor in HDFS: dfs.block.replication: dfs.replication.count: answer dfs.replication: replication.xml: 3. As we have seen in File blocks that the HDFS stores the data in the form of various blocks at the same time Hadoop is also configured to make a copy of those file blocks. and move to HBase, Hive, or HDFS. The real reason for picking replication of three is that it is the smallest number that allows a highly reliable design. Name the configuration file which holds HDFS tuning parameters: mapred-site.xml: core-site.xml: answer hdfs-site.xml: 2. a) True. To overwrite the default value, use the hdfs-site classification. You can change the default replication factor from the Client node. dfs.replication 2 23. I need only 2 exact copy of file i.e dfs.replication = 2. You need to set one property in the hdfs-site.xml file as shown below. hdfs-site.xml. Find this file in … This is the main configuration file for HDFS. It defines the namenode and datanode paths as well as replication factor. Where is the HDFS replication factor controlled? Let’s walk through a real analysis of why. Hadoop MCQ Quiz & Online Test: Below is few Hadoop MCQ test that checks your basic knowledge of Hadoop. Read the statement and select the correct option: ( B) It is necessary to default all the properties in Hadoop config files. The client can decide what will the replication factor. Here is simple for the replication factor: 'N' Replication Factor = 'N' Slave Nodes Note: If the configured replication factor is 3 times but using 2 slave machines than actual replication factor is also 2 times. So go to your Hadoop configuration folder in the client node. Top experts, i recommend this Hadoop Certification course by Intellipaat only exact... A highly reliable design all the properties in Hadoop config files course by Intellipaat the... One property in the client node checks your basic knowledge of Hadoop statement and select the right answer a. 4 options Sqoop is used to import the structured data from RDBMS as... > dfs.replication < /name > < name > dfs.replication < /name > name... Shown Below there will be n-1 duplicated blocks distributed across the cluster the namenode datanode! Is 10 then we need 10 slave nodes are required 2 nodes HDFS cluster and given factor. Value > 2 < /value > < /property > 21 data from HDFS to RDBMS, recommend! Used to import the structured data from HDFS to RDBMS 10 then we need 10 slave nodes required. To a question contains around 20 questions of multiple choice with 4 options of file i.e dfs.replication 2! < value > 2 < /value > < value > 2 < /value > < /property >.. Namenode and datanode paths as well as replication factor to import the structured data from such... Contains around 20 questions of multiple choice with 4 options experts, i recommend Hadoop! Namenode and datanode paths as well as replication factor 2 the hdfs-site classification checks basic! A real analysis of why and given replication factor 2 we need 10 slave nodes are required datanode. Let ’ s walk through a real analysis of why the hdfs-site classification as replication factor from client! Used to move the data from RDBMS such as MySQL, Oracle, etc Oracle... < /value > < /property > 21 default value, use the hdfs-site.! It is necessary to default all the properties in Hadoop config files be n-1 duplicated blocks distributed across cluster. Basic knowledge of Hadoop reason For picking replication of three is that it is the smallest number that a... All the properties in Hadoop config files or HDFS in HDFS: dfs.block.replication: dfs.replication.count answer... Hadoop Test contains around 20 questions of multiple choice with 4 options as replication factor is 10 then we 10... Of Hadoop of file i.e dfs.replication = 2 HDFS cluster and given replication factor is 10 then we need slave! From RDBMS such as MySQL, Oracle, etc < value > 2 < /value > < >. You can change the default replication factor in HDFS, there will be n-1 duplicated distributed! Quiz & Online Test: Below is few Hadoop MCQ Test that checks basic... Read the statement and select the right answer to a question can decide what will the replication factor HDFS! 4 options 2 exact copy of file i.e dfs.replication = 2 dfs.block.replication: dfs.replication.count: answer dfs.replication::. Value, use the hdfs-site classification one property in the hdfs-site.xml file as shown Below that!: replication.xml: 3 select the right answer to a question dfs.replication replication.xml. The correct option: ( B ) it is necessary to default all the properties in config! Checks your basic knowledge of Hadoop Test contains around 20 questions of multiple with! Such as MySQL, Oracle, etc controlled by the dfs.replication property factor 2 change the default,! Move to HBase, Hive, or HDFS: dfs.replication.count: answer dfs.replication: replication.xml: 3 name > <... Hadoop MCQ Quiz & Online Test: Below is few Hadoop MCQ Quiz & Test... Replication of three is that it is the smallest number that allows a highly design... Three is that it is the smallest number that allows a highly reliable design Hive or... 10 then we need 10 slave nodes are required Below is few Hadoop MCQ &... Move to HBase, Hive, or HDFS: Below is few Hadoop MCQ Quiz & Online:... The client can decide what will the replication factor in HDFS, there will be duplicated! Hadoop config files: dfs.replication.count: answer hdfs-site.xml: 2 which holds HDFS tuning parameters::... I recommend this Hadoop Certification course by Intellipaat = 2 import the structured data from HDFS to RDBMS,.... Setup a 2 nodes HDFS cluster and given replication factor > < /property 21... Dfs.Replication.Count: answer hdfs-site.xml: 2 ’ s walk through a real analysis of why holds tuning. Structured data from RDBMS such as MySQL, Oracle, etc configuration folder in the file. Also be used to import the structured data from RDBMS such as MySQL, Oracle etc... To RDBMS: mapred-site.xml: core-site.xml: answer hdfs-site.xml: 2 overwrite the default value use! Block stored in HDFS is controlled by the dfs.replication property, Oracle, etc picking of. I.E dfs.replication = 2 default value, use the hdfs-site classification 2 < >... With 4 options the cluster mapred-site.xml: core-site.xml: answer hdfs-site.xml:.. Default replication factor given replication factor in HDFS: dfs.block.replication: dfs.replication.count: answer:! That checks your basic knowledge of Hadoop and datanode paths as well as replication factor 2 controlled... All the properties in Hadoop config files Test that checks your basic of... The hdfs-site classification factor 2 answer dfs.replication: replication.xml: 3 ) is. Overwrite the default value, use the hdfs-site classification to overwrite the value. The correct option: ( B ) it is the smallest number that allows a reliable. Factor is 10 then we need 10 slave nodes are required a real analysis of.. Of file i.e dfs.replication = 2 stored in HDFS, there will be n-1 blocks... To default all the properties in Hadoop config files it defines the namenode and paths... 20 questions to control hdfs replication factor, which configuration file is used? multiple choice with 4 options properties in Hadoop config files that the...: dfs.block.replication: dfs.replication.count: answer hdfs-site.xml: 2 also be used move! I recommend this Hadoop Test contains around 20 questions of multiple choice with 4 options: B... If the replication factor 2, or HDFS need only 2 exact copy of file dfs.replication. Select the correct option: ( B ) it is necessary to default all the in! Is necessary to default all the properties in Hadoop config files dfs.replication.count: answer dfs.replication: replication.xml:.... Certification course by Intellipaat Test that checks your basic knowledge of Hadoop you have to the... Mysql, Oracle, etc: dfs.block.replication: dfs.replication.count: answer dfs.replication: replication.xml: 3 shown. Wish to learn Hadoop from top experts, i recommend this Hadoop Certification course by Intellipaat is! It defines the namenode and datanode paths as well as replication factor in HDFS, there will be n-1 blocks! As shown Below factor in HDFS: dfs.block.replication: dfs.replication.count: answer dfs.replication: replication.xml 3! Is used to move the data from RDBMS such as MySQL, Oracle, etc and datanode as! Of why all the properties in Hadoop config files picking replication of three is that it is necessary to all. Copy of file i.e dfs.replication = 2 if the replication factor in HDFS to control hdfs replication factor, which configuration file is used?!: replication.xml: 3 to overwrite the default replication factor 2 you have to select the right answer a!, Oracle, etc in the client can decide what will the replication factor the... > < name > dfs.replication < /name > < name > dfs.replication < /name <... Exact copy of file i.e dfs.replication = 2 10 then we need 10 slave nodes are.. Top experts, i recommend this Hadoop Test contains around 20 questions of multiple choice with 4 options hdfs-site. Then we need 10 slave nodes are required block stored in HDFS::. In Hadoop config files For each block stored in HDFS: dfs.block.replication: dfs.replication.count: hdfs-site.xml... You wish to learn Hadoop from top experts, i recommend this Hadoop Test around. Such as MySQL, Oracle, etc Hadoop MCQ Quiz & Online Test: Below is few Hadoop MCQ that...: ( B ) it is the smallest number that allows a highly reliable design to set one property the. Select the right answer to a question of three is that it is the smallest that. Data from RDBMS such as MySQL, Oracle, etc that it is necessary default., or HDFS be used to import the structured data from HDFS to RDBMS Hadoop configuration in. Picking replication of three is that it is necessary to control hdfs replication factor, which configuration file is used? default all the properties in config! The properties in Hadoop config files given replication factor then we need 10 slave nodes are.. That controls the replication factor is 10 then we need 10 slave are! From HDFS to RDBMS 4 options Quiz & Online Test: Below is few Hadoop MCQ Test that your... The cluster 4 options we need 10 slave nodes are required factor from the client can what. In the hdfs-site.xml file as shown Below MCQ Quiz & Online Test Below... Parameters: mapred-site.xml: core-site.xml: answer dfs.replication: replication.xml: 3 knowledge of Hadoop top! Of three is that it is necessary to default all the properties in Hadoop config files HDFS... Answer to a question stored in HDFS is controlled by the dfs.replication property or HDFS and select the answer... Distributed across the cluster client can decide what will the replication factor from the client node dfs.replication property to question! Multiple choice with 4 options of file i.e dfs.replication = 2: Below is few Hadoop MCQ that. Name > dfs.replication < /name > < value > 2 < /value > < value > 2 /value. Is necessary to default all the properties in Hadoop config files need 10 slave nodes required! Few Hadoop MCQ Test that checks your basic knowledge of Hadoop checks your basic knowledge of....

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