| # |
| # |
| # 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 Deleteall < Command |
| def help |
| <<-EOF |
| Delete all cells in a given row; pass a table name, row, and optionally |
| a column and timestamp. Deleteall also support deleting a row range using a |
| row key prefix. Examples: |
| |
| hbase> deleteall 'ns1:t1', 'r1' |
| hbase> deleteall 't1', 'r1' |
| hbase> deleteall 't1', 'r1', 'c1' |
| hbase> deleteall 't1', 'r1', 'c1', ts1 |
| //'' means no specific column, will delete all cells in the row which timestamp is lower than |
| //the one specified in the command |
| hbase> deleteall 't1', 'r1', '', ts1 |
| hbase> deleteall 't1', 'r1', 'c1', ts1, {VISIBILITY=>'PRIVATE|SECRET'} |
| |
| ROWPREFIXFILTER can be used to delete row ranges |
| hbase> deleteall 't1', {ROWPREFIXFILTER => 'prefix'} |
| hbase> deleteall 't1', {ROWPREFIXFILTER => 'prefix'}, 'c1' //delete certain column family in the row ranges |
| hbase> deleteall 't1', {ROWPREFIXFILTER => 'prefix'}, 'c1', ts1 |
| hbase> deleteall 't1', {ROWPREFIXFILTER => 'prefix'}, '', ts1 |
| hbase> deleteall 't1', {ROWPREFIXFILTER => 'prefix'}, 'c1', ts1, {VISIBILITY=>'PRIVATE|SECRET'} |
| |
| CACHE can be used to specify how many deletes batched to be sent to server at one time, default is 100 |
| hbase> deleteall 't1', {ROWPREFIXFILTER => 'prefix', CACHE => 100} |
| |
| |
| The same commands also can be run on a table reference. Suppose you had a reference |
| t to table 't1', the corresponding command would be: |
| |
| hbase> t.deleteall 'r1', 'c1', ts1, {VISIBILITY=>'PRIVATE|SECRET'} |
| hbase> t.deleteall {ROWPREFIXFILTER => 'prefix', CACHE => 100}, 'c1', ts1, {VISIBILITY=>'PRIVATE|SECRET'} |
| EOF |
| end |
| |
| def command(table, row, column = nil, |
| timestamp = org.apache.hadoop.hbase.HConstants::LATEST_TIMESTAMP, args = {}) |
| deleteall(table(table), row, column, timestamp, args) |
| end |
| |
| def deleteall(table, row, column = nil, |
| timestamp = org.apache.hadoop.hbase.HConstants::LATEST_TIMESTAMP, args = {}) |
| @start_time = Time.now |
| table._deleteall_internal(row, column, timestamp, args, true) |
| end |
| end |
| end |
| end |
| |
| # Add the method table.deleteall that calls deleteall.deleteall |
| ::Hbase::Table.add_shell_command('deleteall') |