Examples of org.apache.hadoop.hbase.client.HBaseAdmin.modifyTable()

Class org.apache.hadoop.hbase.client.HBaseAdmin

Examples of org.apache.hadoop.hbase.client.HBaseAdmin.modifyTable()

org.apache.hadoop.hbase.client.HBaseAdmin.modifyTable()
Modify an existing table, more IRB friendly version. Asynchronous operation. This means that it may be a while before your schema change is updated across all of the table. @param tableName name of table. @param htd modified description of the table @throws IOException if a remote or network exception occurs

                     * policy class cannot be found on the server, the HBase table is left in a horrible
                     * "ghost" state where it can't be used and can't be deleted without bouncing the master. 
                     */
                    newDesc.setValue(HTableDescriptor.SPLIT_POLICY, MetaDataSplitPolicy.class.getName());
                    admin.disableTable(tableName);
                    admin.modifyTable(tableName, newDesc);
                    admin.enableTable(tableName);


                    upgradeWhiteList = upgradeCoprocessorsTo3_0(admin, false);
                }
                return null;

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                    }
                }
                         
                // TODO: Take advantage of online schema change ability by setting "hbase.online.schema.update.enable" to true
                admin.disableTable(tableName);
                admin.modifyTable(tableName, newDesc);
                admin.enableTable(tableName);
                
                return newDesc;
            }

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                     * policy class cannot be found on the server, the HBase table is left in a horrible
                     * "ghost" state where it can't be used and can't be deleted without bouncing the master. 
                     */
                    newDesc.setValue(HTableDescriptor.SPLIT_POLICY, MetaDataSplitPolicy.class.getName());
                    admin.disableTable(tableName);
                    admin.modifyTable(tableName, newDesc);
                    admin.enableTable(tableName);
                }
                return true;
            } else {
                if (existingDesc.equals(newDesc)) {

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                // we have a potential race condition
                // Update metadata of table
                // TODO: Take advantage of online schema change ability by setting "hbase.online.schema.update.enable" to true
                admin.disableTable(tableName);
                // TODO: What if not all existing column families are present?
                admin.modifyTable(tableName, newDesc);
                admin.enableTable(tableName);
                return false;
            }


        } catch (IOException e) {

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      Bytes.toBytes("colfam2"));
    htd1.addFamily(coldef2);
    htd1.setMaxFileSize(1024 * 1024 * 1024L);


    admin.disableTable(name);
    admin.modifyTable(name, htd1); // co ModifyTableExample-3-ChangeTable Disable, modify, and enable the table.
    admin.enableTable(name);


    HTableDescriptor htd2 = admin.getTableDescriptor(name);
    System.out.println("Equals: " + htd1.equals(htd2)); // co ModifyTableExample-4-Verify Check if the table schema matches the new one created locally.
    System.out.println("New schema: " + htd2);

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    // disable table before modification
    admin.disableTable(tableName);


    User newOwner = User.createUserForTesting(conf, "new_owner", new String[] {});
    htd.setOwner(newOwner);
    admin.modifyTable(tableName, htd);


    acl = new HTable(conf, AccessControlLists.ACL_TABLE_NAME);
    try {
      AccessControllerProtocol protocol = acl.coprocessorProxy(AccessControllerProtocol.class,
        tableName);

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