Recent questions tagged big-data

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What are the pros and cons of parquet format compared to other formats?

Dec 21, 2020 in Big Data Hadoop by akhtar
 • 38,180 points • 563 views
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What is the difference between partitioning and bucketing a table in Hive ?

Dec 20, 2020 in Big Data Hadoop by akhtar
 • 38,180 points • 493 views
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ssh: connect to host localhost port 22: Connection refused in Hadoop.

Dec 18, 2020 in Big Data Hadoop by akhtar
 • 38,180 points • 2,343 views
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How to show all partitions of a table in Hive?

Dec 18, 2020 in Big Data Hadoop by akhtar
 • 38,180 points • 589 views
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Code for converting multiple .xml files to .json file format

Dec 18, 2020 in Talend by Aaron
 • 160 points • 400 views
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How to use HDFStore to hold large datasets?

Dec 17, 2020 in Big Data Hadoop by akhtar
 • 38,180 points • 143 views
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How to export all collections in MongoDB?

Dec 17, 2020 in Big Data Hadoop by akhtar
 • 38,180 points • 106 views
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How to delete and update a record in Hive?

Dec 8, 2020 in Big Data Hadoop by Rajiv
 • 8,880 points • 595 views
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Where does hive stores its table?

Dec 7, 2020 in Big Data Hadoop by Rajiv
 • 8,880 points • 112 views
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How do I split a string on a delimiter in Bash?

Dec 7, 2020 in Big Data Hadoop by Roshni
 • 10,480 points • 116 views
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How does Hadoop process records split across block boundaries?

Dec 7, 2020 in Big Data Hadoop by Roshni
 • 10,480 points • 92 views
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Name node is in safe mode. Not able to leave

Dec 7, 2020 in Big Data Hadoop by Roshni
 • 10,480 points • 261 views
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How to list all Kafka topics?

Dec 7, 2020 in Apache Kafka by akhtar
 • 38,180 points • 1,850 views
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What is a broker in Kafka Cluster?

Dec 7, 2020 in Apache Kafka by akhtar
 • 38,180 points • 102 views
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What is a producer in Kafka Cluster?

Dec 7, 2020 in Apache Kafka by akhtar
 • 38,180 points • 69 views
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How to create a Kafka producer?

Dec 7, 2020 in Apache Kafka by MD
 • 95,240 points • 80 views
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How to create a Kafka topic in a broker?

Dec 7, 2020 in Apache Kafka by akhtar
 • 38,180 points • 144 views
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1 answer

How to start Kafka server?

Dec 7, 2020 in Apache Kafka by akhtar
 • 38,180 points • 146 views
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How to start Zookeeper service?

Dec 7, 2020 in Apache Kafka by akhtar
 • 38,180 points • 147 views
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How do I output the results of a HiveQL query to CSV?

Nov 20, 2020 in Big Data Hadoop by anonymous
 • 8,880 points • 497 views
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How to know Hive and Hadoop versions from command prompt?

Nov 20, 2020 in Big Data Hadoop by Rajiv
 • 8,880 points • 348 views
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How to set variables in HIVE scripts

Nov 20, 2020 in Big Data Hadoop by anonymous
 • 10,480 points • 661 views
+1 vote
1 answer

When to use Hadoop, HBase, Hive and Pig?

Nov 20, 2020 in Big Data Hadoop by anonymous
 • 10,480 points • 189 views
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Difference between Pig and Hive? Why have both? [closed]

Nov 20, 2020 in Big Data Hadoop by Roshni
 • 10,480 points • 92 views
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1 answer

How to start working with scala?

Nov 16, 2020 in Big Data Hadoop by anonymous
 • 10,480 points • 75 views
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Zookeeper server going down frequently.

Nov 9, 2020 in Big Data Hadoop by B
 • 210 points • 196 views
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1 answer

HDP Upgrade Issue in 2.6.5.

Nov 7, 2020 in Big Data Hadoop by B
 • 210 points • 114 views
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Validating HA for ranger KMS

Nov 6, 2020 in Big Data Hadoop by Shilpa S
 • 450 points • 135 views
+1 vote
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Not able to create kms key using ambari.

Nov 4, 2020 in Big Data Hadoop by Shilpa S
 • 450 points • 167 views
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1 answer

How to read Avro Partition Data?

Nov 4, 2020 in Apache Spark by akhtar
 • 38,180 points • 340 views
+1 vote
1 answer

How to write Spark DataFrame to Avro Data File?

Nov 4, 2020 in Apache Spark by akhtar
 • 38,180 points • 844 views
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1 answer

How to read a dataframe based on an avro schema?

Oct 29, 2020 in Apache Spark by anonymous
 • 120 points • 888 views
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1 answer

Ranger Kms having multiple instance enabled.

Oct 22, 2020 in Big Data Hadoop by Shilpa S
 • 450 points • 198 views
+1 vote
1 answer

How to copy file from Local file system to HDFS?

Oct 19, 2020 in Big Data Hadoop by akhtar
 • 38,180 points • 349 views
0 votes
1 answer

Drop an index from a Hive table.

Oct 19, 2020 in Big Data Hadoop by akhtar
 • 38,180 points • 262 views
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1 answer

How to create an index on Hive table?

Oct 19, 2020 in Big Data Hadoop by akhtar
 • 38,180 points • 187 views
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1 answer

Drop a table in Hive.

Oct 18, 2020 in Big Data Hadoop by akhtar
 • 38,180 points • 92 views
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1 answer

How to add a column in Hive table?

Oct 18, 2020 in Big Data Hadoop by akhtar
 • 38,180 points • 381 views
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