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 • 13,056 views
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Hadoop Hive Bucketing

Dec 14, 2018 in Big Data Hadoop by digger
 • 26,740 points • 686 views
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Hadoop Hive partitioning

Dec 14, 2018 in Big Data Hadoop by digger
 • 26,740 points • 1,146 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 • 2,157 views
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Not able to list sqoop jobs

Dec 13, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 1,210 views
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Hadoop Hive query to filter employees

Dec 13, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 3,687 views
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How to connect impala to cloud lab?

Dec 13, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 1,086 views
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Hadoop PIG extraction shows no output

Dec 13, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 636 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 • 5,440 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 • 1,174 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 • 901 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 • 12,841 views
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How to run Java file in Hadoop?

Dec 12, 2018 in Big Data Hadoop by digger
 • 26,740 points • 3,942 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 • 1,424 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 • 7,888 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 • 1,728 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 • 1,664 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 • 1,035 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 • 848 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 • 6,043 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 • 2,691 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 • 2,625 views
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Not able to start jobtracker in hadoop

Dec 11, 2018 in Big Data Hadoop by digger
 • 26,740 points • 1,444 views
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What is local file System?

Dec 11, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,334 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 • 1,121 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 • 710 views
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Does Cloudera Manager Support an API?

Dec 7, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 500 views
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What is distributed Cache in MapReduce Framework ?

Dec 7, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,694 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 • 1,218 views
+1 vote
1 answer

How to read hdfs file using python?

Dec 7, 2018 in Python by digger
 • 26,740 points • 5,640 views
+1 vote
1 answer

Python function to run hdfs commands

Dec 7, 2018 in Python by digger
 • 26,740 points • 4,727 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 • 8,448 views
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1 answer

How to create new directory in hdfs using java code?

Dec 6, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 3,895 views
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Not able to install hadoop using maven

Dec 6, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 1,530 views
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1 answer

How to use jar file without putting it in hdfs?

Dec 6, 2018 in Big Data Hadoop by digger
 • 26,740 points • 933 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 • 4,019 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 • 3,130 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 • 2,177 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 • 2,552 views
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1 answer

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 • 2,677 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 • 1,072 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 • 4,328 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 • 2,577 views
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1 answer

Hadoop Hive: Correlating expression cannot contain unqualified column references

Dec 5, 2018 in Big Data Hadoop by digger
 • 26,740 points • 4,530 views
0 votes
1 answer

Cant find slave on ResourceManager Web UI

Dec 5, 2018 in Big Data Hadoop by digger
 • 26,740 points • 1,709 views
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1 answer

Why Hadoop is not implemented using MPI?

Dec 4, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 910 views
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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 • 4,591 views
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Unable to set JAVA_HOME path.

Dec 1, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 1,461 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 • 27,113 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 • 8,686 views
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