Which port does SSH work on?
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Can you explain textinformat?
How job tracker schedules an assignment?
What is the role of the namenode?
What kind of hardware is best for hadoop?
If we want to copy 10 blocks from one machine to another, but another machine can copy only 8.5 blocks, can the blocks be broken at the time of replication?
What does hadoop-metrics.properties file do?
Can you explain speculative execution?
Can you define a checkpoint?
What is a rack?
How often DataNode send heartbeat to NameNode in Hadoop?
Explain is it possible to search for files using wildcards?
what if job tracker machine is down?
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