Recent questions tagged hadoop

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Managed Table vs External Table

Dec 14, 2018 in Big Data Hadoop by digger
 • 26,740 points • 13,344 views
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Hadoop Hive Bucketing

Dec 14, 2018 in Big Data Hadoop by digger
 • 26,740 points • 774 views
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Hadoop Hive partitioning

Dec 14, 2018 in Big Data Hadoop by digger
 • 26,740 points • 1,267 views
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How do I join 2 tables in PIG using 2 fields?

Dec 13, 2018 in Big Data Hadoop by digger
 • 26,740 points • 2,274 views
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Not able to list sqoop jobs

Dec 13, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 1,318 views
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Hadoop Hive query to filter employees

Dec 13, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 3,832 views
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How to connect impala to cloud lab?

Dec 13, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 1,190 views
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Hadoop PIG extraction shows no output

Dec 13, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 762 views
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What is the difference between Map-side join and Reduce-side join?

Dec 13, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 5,641 views
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Which side join is taken by default by hive? Map-side or Reduce-side?

Dec 13, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 1,320 views
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Can not list/access files of local system from hadoop

Dec 13, 2018 in Big Data Hadoop by digger
 • 26,740 points • 1,102 views
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How to unzip a zipped file stored in Hadoop hdfs?

Dec 12, 2018 in Big Data Hadoop by digger
 • 26,740 points • 13,402 views
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How to run Java file in Hadoop?

Dec 12, 2018 in Big Data Hadoop by digger
 • 26,740 points • 4,227 views
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How to read Spark elements having multiple lines each?

Dec 12, 2018 in Big Data Hadoop by digger
 • 26,740 points • 1,561 views
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Hadoop: java.lang.IllegalArgumentException: Wrong FS: expected: file:///

Dec 12, 2018 in Big Data Hadoop by digger
 • 26,740 points • 8,264 views
+1 vote
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Not able to start datanode in Hadoop

Dec 12, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 1,850 views
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How do I install cloudera Hadoop without internet connection?

Dec 12, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 1,794 views
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What is the difference between Hadoop API and Streaming?

Dec 12, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 1,268 views
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Number of tasks submitted and executed within the day in hadoop

Dec 12, 2018 in Big Data Hadoop by Irfan
 • 120 points • 1,027 views
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Hadoop Hive: ClassNotFoundException: org.apache.hive.jdbc.HiveDriver

Dec 11, 2018 in Big Data Hadoop by digger
 • 26,740 points • 6,279 views
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How to copy files in hdfs with wildcards?

Dec 11, 2018 in Big Data Hadoop by digger
 • 26,740 points • 2,867 views
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How to read more than one files in Apache Spark?

Dec 11, 2018 in Big Data Hadoop by digger
 • 26,740 points • 2,749 views
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Not able to start jobtracker in hadoop

Dec 11, 2018 in Big Data Hadoop by digger
 • 26,740 points • 1,642 views
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What is local file System?

Dec 11, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,482 views
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I want to install snappy on Hadoop 1.2.1. How do I do that?

Dec 11, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,346 views
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Do worker hosts need access to the Cloudera public repositories for an install with Cloudera Manager?

Dec 7, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 849 views
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Does Cloudera Manager Support an API?

Dec 7, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 588 views
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What is distributed Cache in MapReduce Framework ?

Dec 7, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,923 views
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Which is helpful SVN or Git for Hadoop Development?

Dec 7, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,423 views
+1 vote
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How to read hdfs file using python?

Dec 7, 2018 in Python by digger
 • 26,740 points • 5,778 views
+1 vote
1 answer

Python function to run hdfs commands

Dec 7, 2018 in Python by digger
 • 26,740 points • 5,018 views
+1 vote
1 answer

How to write file in hdfs using python?

Dec 6, 2018 in Big Data Hadoop by digger
 • 26,740 points • 8,594 views
0 votes
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How to create new directory in hdfs using java code?

Dec 6, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 4,116 views
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Not able to install hadoop using maven

Dec 6, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 1,734 views
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How to use jar file without putting it in hdfs?

Dec 6, 2018 in Big Data Hadoop by digger
 • 26,740 points • 1,140 views
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How to concatenate hdfs files and store in output file?

Dec 6, 2018 in Big Data Hadoop by digger
 • 26,740 points • 4,194 views
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Start-dfs.sh daemons not starting. localhost: mkdir: cannot create directory `/user': Permission denied

Dec 5, 2018 in Big Data Hadoop by digger
 • 26,740 points • 3,347 views
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1 answer

Hadoop sqoop import not working. Error: ERROR manager.SqlManager: Error reading from database

Dec 5, 2018 in Big Data Hadoop by digger
 • 26,740 points • 2,278 views
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Not able to create Hive table from HDFS file

Dec 5, 2018 in Big Data Hadoop by digger
 • 26,740 points • 2,672 views
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Hadoop: Can not start namenode: Unable to load native-hadoop library for your platform

Dec 5, 2018 in Big Data Hadoop by digger
 • 26,740 points • 2,928 views
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1 answer

How to move Word and PDF documents to Hadoop HDFS?

Dec 5, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,288 views
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Differentiate: hadoop fs -text vs hadoop fs -cat vs hadoop fs -get

Dec 5, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 4,466 views
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Hadoop mapreduce error: apache.hadoop.mapred.FileAlreadyExistsException: Output directory

Dec 5, 2018 in Big Data Hadoop by digger
 • 26,740 points • 2,832 views
0 votes
1 answer

Hadoop Hive: Correlating expression cannot contain unqualified column references

Dec 5, 2018 in Big Data Hadoop by digger
 • 26,740 points • 4,651 views
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1 answer

Cant find slave on ResourceManager Web UI

Dec 5, 2018 in Big Data Hadoop by digger
 • 26,740 points • 1,910 views
0 votes
1 answer

Why Hadoop is not implemented using MPI?

Dec 4, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,026 views
0 votes
1 answer

How to get absolute path of files in a directory in Hadoop?

Dec 4, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 4,902 views
0 votes
1 answer

Unable to set JAVA_HOME path.

Dec 1, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 1,582 views
+1 vote
1 answer

How to limit the number of rows per each item in a Hive QL?

Dec 1, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 27,623 views
0 votes
1 answer

Hive:Unable to insert values to an array column using "insert".

Dec 1, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 9,119 views
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