ndimiduk commented on a change in pull request #754: HBASE-22978 : Online slow
response log
URL: https://github.com/apache/hbase/pull/754#discussion_r377270965
##########
File path: hbase-shell/src/main/ruby/hbase/admin.rb
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@@ -1453,6 +1453,97 @@ def list_decommissioned_regionservers
@admin.listDecommissionedRegionServers
end
+
#----------------------------------------------------------------------------------------------
+ # Retrieve SlowLog Responses from RegionServers
+ def get_slowlog_responses(server_names, args)
+ unless server_names.is_a?(Array) || server_names.is_a?(String)
+ raise(ArgumentError,
+ "#{server_names.class} of #{server_names.inspect} is not of
Array/String type")
+ end
+ if server_names == '*'
+ server_names = getServerNames([], true)
+ else
+ server_names_list = get_server_names(server_names)
+ server_names = getServerNames(server_names_list, false)
+ end
+ slow_log_responses = @admin.getSlowLogResponses(server_names)
+ filtered_log_responses = filter_slow_responses(args,
+ slow_log_responses)
+ puts 'Retrieved SlowLog Responses from RegionServers.....'
+ if args.empty?
+ puts slow_log_responses.to_s
+ else
+ puts filtered_log_responses.to_s
+ end
+ end
+
+ def filter_slow_responses(args, slow_log_responses)
+ filtered_log_responses = java.util.ArrayList.new
+ slow_log_responses.each do |slow_log|
+ if args.key? 'REGION_NAME'
+ region_name = args['REGION_NAME']
+ unless region_name.nil?
+ if region_name.eql?(slow_log.getRegionName)
+ filtered_log_responses.add(slow_log)
+ next
+ end
+ end
+ end
+ if args.key? 'TABLE_NAME'
+ table_name = args['TABLE_NAME']
+ unless table_name.nil?
+ if slow_log.getRegionName.start_with?(table_name)
+ filtered_log_responses.add(slow_log)
+ next
+ end
+ end
+ end
+ if args.key? 'CLIENT_IP'
+ client_ip = args['CLIENT_IP']
+ unless client_ip.nil?
+ if client_ip.eql?(slow_log.getClientAddress)
+ filtered_log_responses.add(slow_log)
+ next
+ end
+ end
+ end
+ if args.key? 'USER'
+ user = args['USER']
+ unless user.nil?
+ if user.eql?(slow_log.getUserName)
+ filtered_log_responses.add(slow_log)
+ next
+ end
+ end
+ end
+ end
+ filtered_log_responses
+ end
+
+
#----------------------------------------------------------------------------------------------
+ # Clears SlowLog Responses from RegionServers
+ def clear_slowlog_responses(server_names)
+ unless server_names.nil? || server_names.is_a?(Array) ||
server_names.is_a?(String)
+ raise(ArgumentError,
+ "#{server_names.class} of #{server_names.inspect} is not of
correct type")
+ end
+ if server_names.nil?
+ server_names = getServerNames([], true)
+ else
+ server_names_list = get_server_names(server_names)
+ server_names = getServerNames(server_names_list, false)
+ end
+ clear_log_responses = @admin.clearSlowLogResponses(server_names)
+ clear_log_success_count = 0
+ clear_log_responses.each do |response|
+ if response
+ clear_log_success_count += 1
+ end
+ end
+ puts 'Cleared Slowlog responses from ' \
+ "#{clear_log_success_count}/#{clear_log_responses.size}
RegionServers"
Review comment:
Nice summary. If this isn't 100%, where does the operator go to find out
more? I guess the RS logs, but of which host(s)? We assume all our operators
have a log aggregation tool?
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