Considerations for Hadoop Multi-drive configuration

Source: Internet
Author: User

<!--Hdfs-site.xml -< Property><name>Dfs.datanode.fsdataset.volume.choosing.policy</name><value>Org.apache.hadoop.hdfs.server.datanode.fsdataset.AvailableSpaceVolumeChoosingPolicy</value></ Property>< Property><name>Dfs.datanode.available-space-volume-choosing-policy.balanced-space-threshold</name><value>64424509440</value></ Property><!--Yarn-site.xml -< Property>  <name>Yarn.nodemanager.local-dirs</name>  <value>/data1,/data2,/data3/,/data4</value></ Property>

The impact of IO on Hadoop is large, and we need to be aware of the configuration of Hdfs-site.xml and yarn-site.xml on multiple drives.

For example, to reserve the appropriate space for a hard drive, in addition to being used as a copy store, you can leave a portion of the intermediate result storage for the NM to do temporary calculations.

The first parameter is the selection policy of the copy store, which is stored according to the amount of free space, and the second parameter is the standard chosen when balancing, and the difference is greater than the number of G.

Considerations for Hadoop Multi-drive configuration

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.