feat: add a batch get client interface which uses 'BATCH_GET' rpc for read optimization

[cauchy1988]

corresponding server side issue is ： apache/incubator-pegasus#884

this newly added client interface firstly split the needed read items into groups according to related partition and then fetch every grouped-data from 'BATCH_GET' rpc

[levy5307]

In my opinion, the name of batchGet3 is not good enough. Better to make it more clear.

[foreverneverer]

add a batch get client interface which firstly split the needed read items into groups according to related partition and then fetch every grouped-data from 'BATCH_GET' rpc

title is too lang, the detail that you should add into description

[foreverneverer]

In my opinion, the name of batchGet3 is not good enough. Better to make it more clear.

Yeah, but It's a little hard to name. groupGet or batchGetGroup..... this maybe still not good

[cauchy1988]

In my opinion, the name of batchGet3 is not good enough. Better to make it more clear.

Yeah, but It's a little hard to name. groupGet or batchGetGroup..... this maybe still not good

what about batchGetByPartition ？

[cauchy1988]

add a batch get client interface which firstly split the needed read items into groups according to related partition and then fetch every grouped-data from 'BATCH_GET' rpc

title is too lang, the detail that you should add into description

ok

[cauchy1988]

batchGetByPartition

batchGetGroupByPartition?

batchGetByPartition ？ is this name ok？ @acelyc111 @levy5307 @shuo-jia

[foreverneverer]

batchGetByPartition ？ is this name ok？ @acelyc111 @levy5307 @shuo-jia

+1

[acelyc111]

How about batchGetByPartitions, since this request is on multiple partions.