Asked by Julieta Knaebel on November 15, 2021
Categories: Technology and computing Data storage and warehousing
Rating: 4.6/5 (34 votes)
The total number of replicas across the cluster is referred to as the replication factor. A replication factor of 1 means that there is only one copy of each row on one node. A replication factor of 2 means two copies of each row, where each copy is on a differentnode.
What is replication factor? The replication factor is a property that can-be set in the HDFS configuration file that will allow you to adjust the global replication factor for the entire cluster. For each block stored in HDFS, there will be n – 1 duplicated blocks distributed across the cluster.
What does velocity in big data mean? 3Vs (volume, variety and velocity) are three defining properties or dimensions of big data. Volume refers to the amount of data, variety refers to the number of types of data and velocity refers to the speed of data processing.
How do I check my HDFS file system? Hadoop Admin Commands – FSCK, DFSAdmin
- Hadoop fsck / fsck command is used to check the HDFS file system.
- hadoop fsck / -files. It displays all the files in HDFS while checking.
- hadoop fsck / -files -blocks. It displays all the blocks of the files while checking.
- hadoop fsck / -files -blocks -locations.
- hadoop fsck -delete.
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