how to do intercept scan in hbase coprocessor

Question

how can you intercept what is being queried in hbase? I saw that you can intercept preGetOp and preScannerOpen but I can't figure out to see what column families and column qualifiers are being queried. how do you see that?

I am willing to write a coprocessor to intercept the query and search in a secondary-indexed table...

score 0 · Accepted Answer · answered Jan 18 '15 at 08:37

0

You should use the Scan object that you get as a parameter to the preScannerOpen method - it has methods like getFamilies, getFilter etc.

answered Jan 18 '15 at 08:37

Arnon Rotem-Gal-Oz

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have you tried this? and I get only `families`... I also need `qualifiers` – Alex Jan 19 '15 at 09:27

how to do intercept scan in hbase coprocessor

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