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How to dump an HBase table?

How can I have multi table transactions in HBase?

  • I want to save entries either in a set of tables or none of any. Database provides transaction for that. Is there anything available for HBase also? Has anyone tried to implement that open source or by changing into HBase code?

  • Answer:

    Check our opensourced transaction libarary: "https://github.com/VCNC/haeinsa" It is multi-row, multi-table transaction client library for HBase. It's linearly scalable, fault-tolerant and easy to migration from HBase cluster. Since it is already used in practice for our service (300M+ transactions per day) for several month, I can say that it can be used in real service. It is inspired by Percolator, but detailed implementation is different.

James Lee at Quora Visit the source

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Other answers

There is no straight forward way to accomplish cross table or even cross row transactions in HBase. HBase gives up transactions and to gain scalability. As the system exists today, you'll have to build transaction logic in your application side. Having said that, you probably want to re-evaluate your requirement for transactions and think about doing it all in a single row. Some applications can be redesigned to leverage what HBase has to offer. Others might need sophistication on the client side or might not be a good fit for HBase at all.

Amandeep Khurana

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