How to configure hadoop to reuse JVM for mappers?

793

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How to resolve IOException: Cannot create directory

679

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How to change replication factor of files already stored in HDFS?

713

---

shouldn't DFS be able to handle large volumes of data already?

776

---

what is a datanode?

641

---

How does NameNode tackle DataNode failures?

879

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What is InputSplit and RecordReader?

647

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What is the purpose of dfsadmin tool?

917

---

How can you connect an application

724

---

how is a file of the size 1 GB uncompressed

591

---

Is map like a pointer?

679

---

What is the default replication factor?

695

---

How can one increase replication factor to a desired value in Hadoop?

794

---

What is a Record Reader in hadoop?

695

---

What is version-id mismatch error in hadoop?

753

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