[VPC] The /segments/createDefaultTable API creating default segment table for network takes too long

[cj-chung]

Issue The /segments/createDefaultTable is the first API need to be call before creating any network resources. It will create default segment partition table for network resource. The implementation right now using two for-loops, each for-loop takes 4096 iteration to update database.

Suggestion fix Make the database update in one call after finishing the datatable creation in the memory.

[DavidLiu506]

No permission assign

[xieus]

Discussed with @DavidLiu506, we will create a new service method to support bulk creation of segment ranges, and use iCache.putAll to consolidate 4K DB write.

[xieus]

@pkommoju also suggested one possible optimization as follows if putAll takes too long for large db write.

Putall is also considered not good enough for large data, they suggest the following way:

// Get the data streamer reference and stream data.

try (IgniteDataStreamer<Integer, String> stmr = ignite.dataStreamer(The_name_f_theCache_goes_here)) {   

    // Stream entries.

    for (int i = 0; i < 100000; i++)

        stmr.addData(i, Integer.toString(i));
}

Basically, I think we will create another method in ICache interface to handle this method.