Recent questions tagged big-data

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1 answer

Error: FUNCTION 'NUCLEUS_ASCII' already exists.

Feb 5, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 9,651 views
0 votes
1 answer

Exception in thread "main" java.lang.RuntimeException: Hive metastore database is not initialized.

Feb 5, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 1,677 views
0 votes
1 answer

Does spark streaming provides checkpoint?

Feb 4, 2020 in Apache Spark by akhtar
 • 38,260 points • 1,527 views
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0 answers

not able to get output in spark streaming??

Feb 4, 2020 in Apache Spark by akhtar
 • 38,260 points • 889 views
0 votes
1 answer

Is Spark Sql provides indexing to improve processing speed?

Feb 4, 2020 in Apache Spark by akhtar
 • 38,260 points • 954 views
0 votes
1 answer

What is the difference between spark streaming and spark structured streaming?

Feb 4, 2020 in Apache Spark by akhtar
 • 38,260 points • 3,851 views
0 votes
1 answer

What are Dstreams?

Feb 4, 2020 in Apache Spark by akhtar
 • 38,260 points • 1,109 views
0 votes
1 answer

Caused by: ERROR XJ040: Failed to start database 'metastore_db' with class loader org.apache.spark.sql.hive.client.IsolatedClientLoader$$anon$1@2c7bde26

Feb 3, 2020 in Apache Spark by akhtar
 • 38,260 points • 5,749 views
0 votes
1 answer

Cannot create directory /hive/xzxz/_temporary/0. Name node is in safe mode.

Feb 3, 2020 in Apache Spark by akhtar
 • 38,260 points • 815 views
+1 vote
1 answer

is not a Parquet file. expected magic number at tail [80, 65, 82, 49] but found [51, 53, 10, 10]

Feb 3, 2020 in Apache Spark by akhtar
 • 38,260 points • 18,332 views
0 votes
1 answer

What is pageRank in graphX??

Jan 31, 2020 in Apache Spark by akhtar
 • 38,260 points • 1,212 views
0 votes
1 answer

What is ETL tool in Hadoop?

Jan 31, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 3,118 views
0 votes
1 answer

env : R : No such file or directory

Jan 31, 2020 in Apache Spark by Hasid
 • 370 points • 1,823 views
0 votes
2 answers

java.lang.StringIndexOutOfBoundsException: String index out of range: 1

Jan 29, 2020 in Apache Spark by akhtar
 • 38,260 points • 7,707 views
0 votes
1 answer

Not enough space to cache rdd_80_1 in memory!

Jan 29, 2020 in Apache Spark by akhtar
 • 38,260 points • 2,819 views
0 votes
1 answer

Caused by: java.lang.NumberFormatException: Empty String

Jan 29, 2020 in Apache Spark by akhtar
 • 38,260 points • 4,888 views
+1 vote
1 answer

Does sqoop 1.4.6 version on HDP 2.6.4 support SSL

Jan 29, 2020 in Big Data Hadoop by sudi
 • 130 points • 1,329 views
0 votes
1 answer

Difference between map() and mapPartitions() function in Spark.

Jan 23, 2020 in Apache Spark by akhtar
 • 38,260 points • 6,560 views
+1 vote
1 answer

About Available Space Block Placement Policy

Jan 21, 2020 in Big Data Hadoop by anonymous
 • 130 points • 964 views
+1 vote
1 answer

Information Unavailable:Running jps command in Hadoop

Jan 20, 2020 in Big Data Hadoop by Hasid
 • 370 points • 2,076 views
+1 vote
1 answer

Streaming facebook data using Flume framework!!!

Jan 20, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 2,544 views
+1 vote
2 answers

How to find previous records from a data set in Pig??

Jan 17, 2020 in Big Data Hadoop by Hasid
 • 370 points • 1,493 views
+2 votes
0 answers

MapReduce Job is failed: "Job failed as tasks failed. failed Maps:1 failed Reduces:0"

Jan 17, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 1,496 views
+1 vote
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How to create a list of RDDs(or RDD of RDDs, if possible) from a single JavaRDD<List<Integers>> in Java?

Jan 11, 2020 in Apache Spark by itsroops
 • 130 points • 2,989 views
0 votes
1 answer

What is Azure Databricks?

Jan 10, 2020 in Azure by Karan
 • 19,610 points • 2,376 views
+1 vote
1 answer

How to assign a column in Spark Dataframe (PySpark) as a Primary Key?

Jan 9, 2020 in Apache Spark by anonymous
 • 150 points • 14,126 views
+2 votes
1 answer

Spark code takes too much time to run on cluster

Jan 4, 2020 in Apache Spark by asif
 • 140 points • 1,243 views
+1 vote
2 answers

Hadoop Learning Path

Nov 26, 2019 in Big Data Hadoop by anonymous
 • 130 points • 1,307 views
+1 vote
1 answer

datanode decomissioning

Nov 25, 2019 in Big Data Hadoop by Saif
 • 130 points • 733 views
+2 votes
0 answers

Hello, trying to install Hadoop on single node. Error: in screenshot

Nov 20, 2019 in Big Data Hadoop by faris
 • 140 points • 1,149 views
+1 vote
0 answers

Oozie filter all coordinator jobs based on nominalTime

Nov 12, 2019 in Big Data Hadoop by Thayanban
 • 130 points • 1,188 views
+1 vote
1 answer

In spark streaming with kafka, i am getting error “Exception in thread ”main“ java.lang.NoSuchMethodError: org.apache.spark.internal.Logging.$init$”

Nov 7, 2019 in Apache Spark by c.kothamasu
 • 160 points • 3,701 views
+1 vote
2 answers

sparkstream.textfilstreaming(localpathdirectory). I am getting empty results

Nov 7, 2019 in Apache Spark by c.kothamasu
 • 160 points • 956 views
+1 vote
1 answer

Is there any efficient way of dealing null values during concat functionality of pyspark.sql version 2.3.4?

Nov 5, 2019 in Apache Spark by aizhar
 • 130 points • 39,990 views
0 votes
1 answer

Sqoop could not load db driver class

Oct 25, 2019 in Big Data Hadoop by Ritu
 • 120 points • 3,248 views
+1 vote
2 answers

Unable to create external table on HIVE

Oct 14, 2019 in Big Data Hadoop by Ozer
 • 130 points • 4,619 views
+1 vote
0 answers

Class not found exception in wordcount program in mapreduce

Oct 3, 2019 in Big Data Hadoop by Tarun
 • 160 points • 1,850 views
+1 vote
1 answer

Cannot resolve Error In Spark when filter records with two where condition

Oct 1, 2019 in Apache Spark by anonymous
 • 130 points • 2,720 views
+1 vote
1 answer

flume twitter data file not generated in HDFS

Sep 26, 2019 in Big Data Hadoop by chandanarora
 • 130 points • 3,750 views
+1 vote
1 answer

Client not able to connect to cluster

Sep 21, 2019 in Big Data Hadoop by raghavendra
 • 160 points • 961 views
+1 vote
1 answer

2 datanodes is slower ,how to get those details .what is your approach as hadoop admin

Sep 21, 2019 in Big Data Hadoop by raghavendra
 • 160 points • 1,786 views
+1 vote
2 answers

How to find the database daily refresh time / sync up time

Sep 17, 2019 in Big Data Hadoop by Hemanth
 • 250 points • 9,608 views
+1 vote
0 answers

Directory not found while using java -classpath

Sep 14, 2019 in Big Data Hadoop by shravanth
 • 628 views
0 votes
1 answer

Primary keys in Apache Spark

Sep 11, 2019 in Apache Spark by nitinrawat895
 • 11,380 points • 1,385 views
0 votes
1 answer

How to run Hadoop 2.1.0 in Windows System?

Sep 11, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 2,157 views
+1 vote
1 answer

" org.apache.hadoop.yarn.exceptions.YarnRuntimeException: Permissions incorrectly set for dir " problem

Sep 9, 2019 in Big Data Hadoop by Na
 • 4,859 views
+1 vote
1 answer

Namenode v/s Secondary namenode

Sep 9, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 5,053 views
0 votes
1 answer

Warning: unable to load hadoop native library

Sep 9, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,534 views
+1 vote
0 answers

hdfs namenode -format not working, not showing anything.

Sep 6, 2019 in Big Data Hadoop by nar
 • 1,319 views
0 votes
1 answer

Secondary Sorting in Hadoop MapReduce

Sep 5, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,839 views
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