[HBASE-25705] Convert proto to RSGroupInfo is costly

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.0.0-alpha-1, 2.2.3
• Fix Version/s: 3.0.0-alpha-1
• Component/s: rsgroup
• Hadoop Flags: Reviewed
• Assignee: mokai
• Reporter: mokai
• Created: 27/Mar/21 10:18
• Updated: 29/May/21 18:08
• Resolved: 29/Mar/21 19:01

Description

Convert RSGroupProtos.RSGroupInfo to RSGroupInfo is costly if the RSGroup has too many RSs and tables. 

We can use parallelStream to handle the HBaseProtos.ServerName list and TableProtos.TableName list in ProtubufUtil#toGroupInfo as blow.

Collection<Address> addresses = proto.getServersList()
.parallelStream()
.map(server -> Address.fromParts(server.getHostName(), server.getPort()))
.collect(Collectors.toList());

Collection<TableName> tables = proto.getTablesList()
.parallelStream()
.map(tableName -> ProtobufUtil.toTableName(tableName))
.collect(Collectors.toList());

Get the RSGroupInfo which has 9 RS and 20k tables, the time cost reduced from 6038 ms to 684 ms.

Issue Links

• links to: GitHub Pull Request #3102

Sub-Tasks

• Backport HBASE-25705 to branch-2: Resolved
• Backport HBASE-25705 to branch-1: Resolved