Trending questions in Big Data Hadoop

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Monitoring Hadoop with Prometheus JMX

Hi@Som, This error is not related to Prometheus ...READ MORE

Sep 14 in Big Data Hadoop by MD
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179 views
0 votes
1 answer

Can't Pass Java Agent in Hive

Hi@Som, You may forget to set the below ...READ MORE

Sep 15 in Big Data Hadoop by MD
• 79,930 points
57 views
0 votes
1 answer

I went to datadir/hdfs/nn/current but no folder called current

Hi@Wlssam, I am not able to understand your ...READ MORE

Sep 14 in Big Data Hadoop by MD
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39 views
0 votes
1 answer

which version of sqoop should i use for hadoop 3.3.0?

Hi@shresht, This is just a warning. Did you ...READ MORE

Sep 7 in Big Data Hadoop by MD
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176 views
0 votes
1 answer

Multiple rows to columns in hive

Hi, You need to create your own customize ...READ MORE

Sep 4 in Big Data Hadoop by MD
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216 views
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0 answers

which version of sqoop should i use with hadoop 3.3.0 ? [closed]

I am trying to install sqoop 1.4.7 ...READ MORE

Sep 6 in Big Data Hadoop by shresht
• 140 points

closed Sep 7 by Gitika 164 views
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1 answer

Parquet File and ORC Table

Hi. @Vikramraj, Regarding your query, I would suggest ...READ MORE

Sep 1 in Big Data Hadoop by Gitika
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103 views
0 votes
1 answer

SQOOP Import error - Invalid argurments

Hi@Vikramraj, You have passed wrong arguments in your ...READ MORE

Sep 1 in Big Data Hadoop by MD
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66 views
0 votes
0 answers

How I can kill the jobs using jobID running in local mode with Hadoop

I am Running hadoop jobs in local ...READ MORE

Aug 26 in Big Data Hadoop by kamboj
• 140 points
170 views
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1 answer

Hadoop Small File

Hi@himanshu, To monitor your Namenode, you can create ...READ MORE

Aug 24 in Big Data Hadoop by MD
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63 views
0 votes
1 answer

FAILED: Execution Error, return code 2 from org.apache.hadoop.hive.ql.exec.mr.MapRedTask

Hi@akhtar, This issue generally occurs when the memory ...READ MORE

Apr 17 in Big Data Hadoop by MD
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5,515 views
0 votes
2 answers
0 votes
1 answer

Is there any alternative for edureka vm ?

you can use Hortonworks ! READ MORE

Nov 9 in Big Data Hadoop by Reza
179 views
0 votes
1 answer

Format HDFS Namenode Error: Could not find or load main class ”-Djava.library.path=.home.hadoop.hadoop-3.2.1.lib.native”

Hi@fwood, According to your configuration, you didn't set ...READ MORE

Jun 12 in Big Data Hadoop by MD
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2,336 views
0 votes
1 answer

How to download hadoop jar files for adding eclipse

Hi@Manl, To import jar file in your Eclipse ...READ MORE

Jul 20 in Big Data Hadoop by MD
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571 views
0 votes
11 answers

What is the default Namenode port of HDFS. Is it 8020 or 9000 or 50070?

8020/9000 hadoop namenode metadata port number. or ...READ MORE

Dec 31, 2018 in Big Data Hadoop by SM
30,292 views
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1 answer

In my hadoop namenode is not starting

Hi@Aman, There may be many reasons behind this. ...READ MORE

Jul 22 in Big Data Hadoop by MD
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141 views
0 votes
1 answer

input split and block size with examples

Hi@siva, Hadoop HDFS split large files into small ...READ MORE

Jul 13 in Big Data Hadoop by MD
• 79,930 points
109 views
0 votes
1 answer

I have to ingest in hadoop cluster large number of files for testing , what is the best way to do it?

Hi@sonali, It depends on what kind of testing ...READ MORE

Jul 7 in Big Data Hadoop by MD
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192 views
0 votes
11 answers

How to check size of HDFS directory?

It is the same syntax. Use the ...READ MORE

Jun 6, 2019 in Big Data Hadoop by Sowmya
25,554 views
0 votes
0 answers

Data import using sqoop to Hive

Hello Everyone, I am trying to import data ...READ MORE

Jul 3 in Big Data Hadoop by anonymous
• 120 points
220 views
0 votes
1 answer

How to get the column name printed in a file along with the output in Hive?

Hi @Neethu, Regarding your query, I would suggest ...READ MORE

Jul 2 in Big Data Hadoop by Gitika
• 50,540 points
173 views
0 votes
1 answer

nodetool: Failed to connect to '127.0.0.1:7199' - ConnectException: 'Connection refused (Connection refused)'.

Hi@akhtar, To avoid this error, You have to ...READ MORE

Apr 1 in Big Data Hadoop by MD
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3,764 views
0 votes
5 answers

What is the HDFS command to list all the files in HDFS according to the timestamp?

You can try filter using value in ...READ MORE

Dec 7, 2018 in Big Data Hadoop by Lenny
29,294 views
0 votes
0 answers
0 votes
1 answer

ERROR 1142 (42000): SELECT command denied to user ''@'localhost' for table 'user'

Hey, This is a mysql command line error ...READ MORE

Jun 19, 2019 in Big Data Hadoop by Gitika
• 50,540 points
15,413 views
+1 vote
1 answer

starting hive gave me exception

Hi@Hans, You may got this error, if you ...READ MORE

May 20 in Big Data Hadoop by MD
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304 views
0 votes
1 answer

getting error: -bash: syntax error near unexpected token `('

hi, you should give space between PigStorage and ...READ MORE

May 9 in Big Data Hadoop by anonymous
• 140 points
863 views
+1 vote
1 answer

How to change columname in a dataframe

Hi@shanmugam, You can change your column by using ...READ MORE

May 21 in Big Data Hadoop by MD
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237 views
0 votes
1 answer

Error while starting the daemon process in windows 10

Hi@Arun, By default, the parameter "dfs.datanode.failed.volumes.tolerated" is set ...READ MORE

Apr 20 in Big Data Hadoop by MD
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1,416 views
0 votes
1 answer

What are good big data courses for freshers?

Hi@akhtar, There are lots of Big Data courses ...READ MORE

May 15 in Big Data Hadoop by MD
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278 views
0 votes
1 answer

What skills are required to be a Hadoop developer?

Hi@akhtar, To become a Hadoop developer, you should ...READ MORE

May 15 in Big Data Hadoop by MD
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256 views
0 votes
1 answer

Which is the best online Big Data Hadoop course?

Hi@akhtar, As you are a beginner, you should ...READ MORE

May 15 in Big Data Hadoop by MD
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210 views
0 votes
1 answer
0 votes
1 answer
0 votes
1 answer

Distcp From Local to HDFS giving error file not found

Hey, @Amey, This is probably because of a ...READ MORE

Apr 29 in Big Data Hadoop by Gitika
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351 views
0 votes
1 answer

ERROR tool.BaseSqoopTool: Got error creating database manager: java.io.IOException: No manager for connect string

Hi@akhtar, I think your jdbc jars are not ...READ MORE

Apr 24 in Big Data Hadoop by MD
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471 views
0 votes
1 answer

Error: Couldn't properly initialize access to HDFS internals. Please update your WAL Provider to not make use of the 'asyncfs' provider.

Hi@akhtar, I think you are trying to use AsyncFSWAL for HBase-2.x as ...READ MORE

Apr 30 in Big Data Hadoop by MD
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196 views
0 votes
1 answer
0 votes
1 answer

kernel: java: page allocation failure. order:4, mode:0x20

Hi@akhtar, You may got this error because of ...READ MORE

Apr 30 in Big Data Hadoop by MD
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161 views
0 votes
1 answer

can we add hadoop in docker or online server or cloud

Hi@Rajan, If you are asking, can we configure hadoop ...READ MORE

May 1 in Big Data Hadoop by MD
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122 views
0 votes
1 answer

How to create one job in Sqoop?

Hi@akhtar, You can create one job for future ...READ MORE

Apr 29 in Big Data Hadoop by MD
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144 views
0 votes
1 answer

how to make an existing hadoop cluster self adaptive?

Hey, @Sanjana, You can't shrink or expand nodes ...READ MORE

Jul 16 in Big Data Hadoop by Gitika
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159 views
0 votes
0 answers

Real time access to data in hadoop

We need to store customer billing data ...READ MORE

Apr 30 in Big Data Hadoop by anonymous
• 120 points
127 views
0 votes
1 answer
0 votes
1 answer

error:org.apache.flume.sink.hdfs.HDFSEventSink.process(HDFSEventSink.java:456)] HDFS IO error java.io.IOException

Hi@akhtar, There may be problem in firewall, so ...READ MORE

Apr 23 in Big Data Hadoop by MD
• 79,930 points
297 views