logo
down
shadow

Hadoop writes incomplete file to HDFS


Hadoop writes incomplete file to HDFS

Content Index :

Hadoop writes incomplete file to HDFS
Tag : hadoop , By : toma
Date : November 28 2020, 11:01 PM

I wish this help you As a partial answer, we found that in the worker nodes, the GC was causing lots of long pauses (3~5 secs) every six hours (the predefined GC span). We increased the heap from 1GB to 4GB and seems solved. What is causing the heap going constantly full is still an open question, but is beyond the scope of this. After the heap increase, there are no more errors (related to this) in the logs.

Comments
No Comments Right Now !

Boards Message :
You Must Login Or Sign Up to Add Your Comments .

Share : facebook icon twitter icon

Hadoop: HDFS File Writes & Reads


Tag : hadoop , By : yarry
Date : March 29 2020, 07:55 AM
will help you Though your above explanation of a file write is correct, a DataNode can read and write data simultaneously. From HDFS Architecture Guide:

hadoop/hdfs/name is in an inconsistent state: storage directory(hadoop/hdfs/data/) does not exist or is not accessible


Tag : hadoop , By : Alex S
Date : March 29 2020, 07:55 AM
wish of those help Removed the "file:" from the hdfs-site.xml file
[WRONG HDFS-SITE.XML]
  <property>
  <name>dfs.namenode.name.dir</name>
  <value>file:/home/hduser/mydata/hdfs/namenode</value>
  </property>
  <property>
  <name>dfs.datanode.data.dir</name>
  <value>file:/home/hduser/mydata/hdfs/datanode</value>
  </property>
  <property>
  <name>dfs.namenode.name.dir</name>
  <value>/home/hduser/mydata/hdfs/namenode</value>
  </property>


  <property>
  <name>dfs.datanode.data.dir</name>
  <value>/home/hduser/mydata/hdfs/datanode</value>
  </property>

Hadoop HDFS - Wrong FS: hdfs://0.0.0.0:9000... expected: file:///


Tag : development , By : tayles
Date : March 29 2020, 07:55 AM
seems to work fine You have a spelling error in your code.
Your code: conf.addResource(new Path("/home/hadoo/hadoop-2.5.2/etc/hadoop/core-site.xml"));

Is that possible to run HADOOP and copy a file from local fs to HDFS in JAVA BUT without installing Hadoop on file syste


Tag : java , By : ganok_tor
Date : March 29 2020, 07:55 AM
wish of those help The right choice for your use case will be using WebHDFS api. It supports the systems running outside Hadoop clusters to access and manipulate the HDFS contents. It doesn't require the client systems to have hadoop binaries installed, you could manipulate remote hdfs over http using CURL itself.
Please refer,

How Name node update availability of Data Nodes for HDFS writes in Hadoop


Tag : hadoop , By : greggerz
Date : March 29 2020, 07:55 AM
this will help
Data will be written to just one datanode by client, rest replication is taken care by the datanodes itself on namenode instruction. Replica placement: while a datanode receives data of the block from the client, the datanode saves the data in a file, which represents the block, and, simultaneously re-sends the data to another datanode, which is supposed to create another replica of the block.
shadow
Privacy Policy - Terms - Contact Us © scrbit.com