Thrift HBase客户端-支持过滤器和协处理器

Question

Sadly, My hbase client language is Python, I am using happybase for now which is based on thrift AFAIK. I know thrift so far is still not supporting filters, coprocessors (correct me if I am wrong here). Can some one point me any Jira items I can track the plan/progress if there is one? The only ones I can find is from "Hbase in Action":

• “Thrift server to match the new Java API”: https://issues.apache.org/jira/browse/HBASE-1744

• “Make Endpoint Coprocessors Available from Thrift”: https://issues.apache.org/jira/browse/HBASE-5600

The 1st one doesn't seem covering filters and the 2nd one hasn't been updated for a long while.

Answer 1

Filters are supported through Thrift. Here's a HappyBase example:

table = connection.table("mytable")
g = table.scan(filter="SingleColumnValueFilter ('f', 'column1', =, 'substring:text')")
for key, data in g:
    print data

Also check out Thrift book for information on various filters and their configuration.

Answer 2

Family Filter

Description: This filter takes a compare operator and a comparator. It compares each qualifier name with the comparator using the compare operator and if the comparison returns true, it returns all the key-values in that column

Syntax: QualifierFilter (, '')

Example: "QualifierFilter (=, 'Column1')"

I think it is a mistake in it