Write successful message from Data node to Name Node

0 votes
When writing of data to the data node is done, the client sends the "Write successful"  message to Name Node. Shouldn't this message be sent by Data Node to Name Node informing that writing is complete so that metadata in Name Node be updated?
Jun 20, 2019 in Big Data Hadoop by Shri
487 views

1 answer to this question.

0 votes
What happens is namenode on the basis of rack-awareness algorithm selects a datanode where the data is written, the next replication happens in another data node and so on. The last data node on which data has been written sends an acknowledgment to the previously written datanode and so on. Finally, the datanode which had been written first sends a signal to the name node that the data has been successfully written in the data nodes.
answered Jun 20, 2019 by Quill

Related Questions In Big Data Hadoop

0 votes
1 answer

How to exit name node from safe mode?

In order to forcefully let the namenode ...READ MORE

answered Sep 26, 2018 in Big Data Hadoop by slayer
• 29,350 points
1,712 views
0 votes
1 answer
0 votes
1 answer

How can we send data from MongoDB to Hadoop?

The MongoDB Connector for Hadoop reads data ...READ MORE

answered Mar 27, 2018 in Big Data Hadoop by nitinrawat895
• 11,380 points
1,879 views
0 votes
1 answer

Is there any way to load data from MySql to HDFS?

The generic command i.e used to import ...READ MORE

answered Apr 10, 2018 in Big Data Hadoop by nitinrawat895
• 11,380 points
3,314 views
+1 vote
1 answer

Hadoop Mapreduce word count Program

Firstly you need to understand the concept ...READ MORE

answered Mar 16, 2018 in Data Analytics by nitinrawat895
• 11,380 points
10,559 views
0 votes
1 answer

hadoop.mapred vs hadoop.mapreduce?

org.apache.hadoop.mapred is the Old API  org.apache.hadoop.mapreduce is the ...READ MORE

answered Mar 16, 2018 in Data Analytics by nitinrawat895
• 11,380 points
2,185 views
+2 votes
11 answers

hadoop fs -put command?

Hi, You can create one directory in HDFS ...READ MORE

answered Mar 16, 2018 in Big Data Hadoop by nitinrawat895
• 11,380 points
104,216 views
–1 vote
1 answer

Hadoop dfs -ls command?

In your case there is no difference ...READ MORE

answered Mar 16, 2018 in Big Data Hadoop by kurt_cobain
• 9,390 points
4,260 views
0 votes
1 answer

How to delete a directory from Hadoop cluster which is having comma(,) in its name?

Just try the following command: hadoop fs -rm ...READ MORE

answered May 7, 2018 in Big Data Hadoop by nitinrawat895
• 11,380 points
2,777 views
0 votes
1 answer

Point data from Hive to Hbase

Refer to the below steps to transfer ...READ MORE

answered Feb 15, 2019 in Big Data Hadoop by Omkar
• 69,210 points
1,324 views
webinar REGISTER FOR FREE WEBINAR X
REGISTER NOW
webinar_success Thank you for registering Join Edureka Meetup community for 100+ Free Webinars each month JOIN MEETUP GROUP