Explain how can you debug hadoop code?

435

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Explain how can you check whether namenode is working beside using the jps command?

396

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Explain what is webdav in hadoop?

476

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Mention what job does the conf class do?

390

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For using hadoop list the network requirements?

425

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Explain deletion in hbase? Mention what are the three types of tombstone markers in hbase?

137

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What are the main key structures of hbase?

162

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What is the use of hbase hmaster?

141

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Which technique can you use in hbase to access hfile directly without the help of hbase?

169

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Explain what is wal and hlog in hbase?

298

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How many operational commands in hbase?

164

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why use hcolumndescriptor class?

146

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What is the row key?

153

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Tell me about the types of hbase operations?

171

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How does hbase actually delete a row?

188

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