February 2019
Beginner to intermediate
544 pages
14h 36m
English
Content preview from Mastering Hadoop 3
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File System optimization
The HDFS disk comes with specific file systems such as Ext4, Ext3, or XFS, and tuning the file system for better performance will significantly improve the processing performance. Let's look into a few commonly known options for HDFS tuning:
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Mount option: There are a few mount options that are efficient for Hadoop clusters. A right mount option provides good performance benefits. Remember to reboot the system after applying the setting as just changing the configuration will not work. You need to remount the system and then reboot it. Ext4 and XFS should have noatime configured.
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HDFS block size: The block size plays an important role in boosting the performance of NameNode as well as job execution performance. ...
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