| HDFS fault tolerant information?
Fault Tolerance in Hadoop HDFS refers to the behaviour of system in un-situable condition and how that system handle such situation. HDFS is fault-tolerant because it will replicates data on different datanodes. ANd by default all block of data is replicated on three datanodes. And this data blocks are stored in different DataNodes.
And in case of one node crashes we can still retrieved from the other datanodes where block of data is replicates | | |