Repository: hbase Updated Branches: refs/heads/branch-1 cdda1d030 -> 3765e7bed
HBASE-14925 Develop HBase shell command/tool to list table's region info through command line Signed-off-by: Ashish Singhi <ashishsin...@apache.org> Project: http://git-wip-us.apache.org/repos/asf/hbase/repo Commit: http://git-wip-us.apache.org/repos/asf/hbase/commit/3765e7be Tree: http://git-wip-us.apache.org/repos/asf/hbase/tree/3765e7be Diff: http://git-wip-us.apache.org/repos/asf/hbase/diff/3765e7be Branch: refs/heads/branch-1 Commit: 3765e7bedb937044c8e0a416a7b44d41165ee48c Parents: cdda1d0 Author: Karan Mehta <karanmehta93 at gmail dot com> Authored: Fri Apr 28 14:08:04 2017 +0530 Committer: Ashish Singhi <ashishsin...@apache.org> Committed: Fri Apr 28 14:08:04 2017 +0530 ---------------------------------------------------------------------- hbase-shell/src/main/ruby/shell.rb | 1 + .../main/ruby/shell/commands/list_regions.rb | 76 ++++++++++++++++++++ 2 files changed, 77 insertions(+) ---------------------------------------------------------------------- http://git-wip-us.apache.org/repos/asf/hbase/blob/3765e7be/hbase-shell/src/main/ruby/shell.rb ---------------------------------------------------------------------- diff --git a/hbase-shell/src/main/ruby/shell.rb b/hbase-shell/src/main/ruby/shell.rb index 9576cc7..99adf73 100644 --- a/hbase-shell/src/main/ruby/shell.rb +++ b/hbase-shell/src/main/ruby/shell.rb @@ -272,6 +272,7 @@ Shell.load_command_group( alter_async get_table locate_region + list_regions ], :aliases => { 'describe' => ['desc'] http://git-wip-us.apache.org/repos/asf/hbase/blob/3765e7be/hbase-shell/src/main/ruby/shell/commands/list_regions.rb ---------------------------------------------------------------------- diff --git a/hbase-shell/src/main/ruby/shell/commands/list_regions.rb b/hbase-shell/src/main/ruby/shell/commands/list_regions.rb new file mode 100644 index 0000000..527a6cb --- /dev/null +++ b/hbase-shell/src/main/ruby/shell/commands/list_regions.rb @@ -0,0 +1,76 @@ +# +# +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you under the Apache License, Version 2.0 (the +# "License"); you may not use this file except in compliance +# with the License. You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. +# + +module Shell + module Commands + class ListRegions < Command + def help + + return<<EOF + List all regions for a particular table as an array and also filter them by server name (optional) as prefix. + By default, it will return all the regions for the table + + Examples: + hbase> list_regions 'table_name' + hbase> list_regions 'table_name', 'server_name' + +EOF + return + end + + def command(table_name, region_server_name = "") + admin_instance = admin.instance_variable_get("@admin") + conn_instance = admin_instance.getConnection() + cluster_status = admin_instance.getClusterStatus() + hregion_locator_instance = conn_instance.getRegionLocator(TableName.valueOf(table_name)) + hregion_locator_list = hregion_locator_instance.getAllRegionLocations() + results = Array.new + + begin + hregion_locator_list.each do |hregion| + hregion_info = hregion.getRegionInfo() + server_name = hregion.getServerName() + if hregion.getServerName().toString.start_with? region_server_name + startKey = Bytes.toString(hregion.getRegionInfo().getStartKey()) + endKey = Bytes.toString(hregion.getRegionInfo().getEndKey()) + region_load_map = cluster_status.getLoad(server_name).getRegionsLoad() + region_load = region_load_map.get(hregion_info.getRegionName()) + region_store_file_size = region_load.getStorefileSizeMB() + region_requests = region_load.getRequestsCount() + results << { "server" => hregion.getServerName().toString(), "name" => hregion_info.getRegionNameAsString(), "startkey" => startKey, "endkey" => endKey, "size" => region_store_file_size, "requests" => region_requests } + end + end + ensure + hregion_locator_instance.close() + end + + @end_time = Time.now + + printf("%-60s | %-60s | %-15s | %-15s | %-20s | %-20s", "SERVER_NAME", "REGION_NAME", "START_KEY", "END_KEY", "SIZE", "REQ"); + printf("\n") + for result in results + printf("%-60s | %-60s | %-15s | %-15s | %-20s | %-20s", result["server"], result["name"], result["startkey"], result["endkey"], result["size"], result["requests"]); + printf("\n") + end + printf("%d rows", results.size) + + end + end + end +end