Recent questions tagged hadoop

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Definition says: RDD is immutable distributed collection of objects I don't quite understand what does it mean. Is ... one please help. Select the correct answer from above options...

asked Jan 30, 2022 in Education by JackTerrance

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Q: Why do we need ZooKeeper in the Hadoop stack?

I am new to Hadoop/ZooKeeper. I cannot understand the purpose of using ZooKeeper with Hadoop, is ZooKeeper writing ... with Hadoop? Select the correct answer from above options...

asked Jan 30, 2022 in Education by JackTerrance

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Q: How to recognize rectangles in this image?

I have an image with horizontal and vertical lines. In fact, this image is the BBC website converted to ... rectangle. Thanks! Select the correct answer from above options...

asked Jan 29, 2022 in Education by JackTerrance

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Q: How to understand the term `tensor` in TensorFlow?

I am new to TensorFlow. While I am reading the existing documentation, I found the term tensor really confusing. ... types of tensors? Select the correct answer from above options...

asked Jan 29, 2022 in Education by JackTerrance

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Q: How to list only the file names in HDFS

I would like to know is there any command/expression to get only the file name in hadoop. I need to fetch only the ... cut -d ' ' -f17 Select the correct answer from above options...

asked Jan 28, 2022 in Education by JackTerrance

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Q: Spark on yarn concept understanding

I am trying to understand how spark runs on YARN cluster/client. I have the following question in my mind. Is ... the job to cluster? Select the correct answer from above options...

asked Jan 28, 2022 in Education by JackTerrance

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Q: What is the relation between 'mapreduce.map.memory.mb' and 'mapred.map.child.java.opts' in Apache Hadoop YARN?

I would like to know the relation between the mapreduce.map.memory.mb and mapred.map.child.java.opts parameters. ... .child.java.opts? Select the correct answer from above options...

asked Jan 28, 2022 in Education by JackTerrance

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Q: How to Delete a directory from Hadoop cluster which is having comma(,) in its name?

I have uploaded a Directory to hadoop cluster that is having "," in its name like "MyDir, Name" when I ... such kind of Directories. Select the correct answer from above options...

asked Jan 28, 2022 in Education by JackTerrance

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Q: Hive query output to file

I run hive query by java code. Example: "SELECT * FROM table WHERE id > 100" How to export result to hdfs file.a Select the correct answer from above options...

asked Jan 28, 2022 in Education by JackTerrance

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Q: Differences between Amazon S3 and S3n in Hadoop

I do not understand the differences between using S3 and S3n with my Hadoop cluster, can someone explain? Select the correct answer from above options...

asked Jan 26, 2022 in Education by JackTerrance