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Posted to dev@hbase.apache.org by "sishen.freecity (JIRA)" <ji...@apache.org> on 2008/07/23 08:14:31 UTC
[jira] Created: (HBASE-764) The name of column request has padding
zero using REST interface
The name of column request has padding zero using REST interface
----------------------------------------------------------------
Key: HBASE-764
URL: https://issues.apache.org/jira/browse/HBASE-764
Project: Hadoop HBase
Issue Type: Bug
Components: rest
Affects Versions: 0.2.0
Environment: Debian GNU/Linux, Java5
Reporter: sishen.freecity
Today when i play with the REST interface and found the column POST/PUT/GET has a problem.
When i use the hbase shell to check the data, i found the row name has the padding zero.
The cause is that TableHandler use Text class to encode the string to the UTF-8. But CharSetEncoder
will pre-allocate more spaces then the length of String for performance. So we get the padding zero
when inserting the value to the table. The fix is to get the String instead of the byte[] for the BatchUpdate.
Below is the patch. Also, the patch includes fixing the wrong use of (bytes[]).toString() using Bytes.toString(byte[])
Index: src/java/org/apache/hadoop/hbase/rest/TableHandler.java
===================================================================
--- src/java/org/apache/hadoop/hbase/rest/TableHandler.java (revision 678664)
+++ src/java/org/apache/hadoop/hbase/rest/TableHandler.java (working copy)
@@ -174,7 +174,7 @@
// copy over those cells with requested column names
for(byte [] current_column: columns_retrieved) {
- if(requested_columns_set.contains(current_column.toString())){
+ if(requested_columns_set.contains(Bytes.toString(current_column))){
m.put(current_column, prefiltered_result.get(current_column));
}
}
@@ -295,7 +295,7 @@
try{
// start an update
- Text key = new Text(row);
+ String key = new Text(row).toString();
batchUpdate = timestamp == null ?
new BatchUpdate(key) : new BatchUpdate(key, Long.parseLong(timestamp));
@@ -308,7 +308,7 @@
// extract the name and value children
Node name_node = column.getElementsByTagName("name").item(0);
- Text name = new Text(name_node.getFirstChild().getNodeValue());
+ String name = new Text(name_node.getFirstChild().getNodeValue()).toString();
Node value_node = column.getElementsByTagName("value").item(0);
@@ -356,7 +356,7 @@
XMLOutputter outputter = getXMLOutputter(response.getWriter());
outputter.startTag("regions");
for (int i = 0; i < startKeys.length; i++) {
- doElement(outputter, "region", startKeys[i].toString());
+ doElement(outputter, "region", Bytes.toString(startKeys[i]));
}
outputter.endTag();
outputter.endDocument();
@@ -368,7 +368,7 @@
PrintWriter out = response.getWriter();
for (int i = 0; i < startKeys.length; i++) {
// TODO: Add in the server location. Is it needed?
- out.print(startKeys[i].toString());
+ out.print(Bytes.toString(startKeys[i]));
}
out.close();
break;
@@ -454,7 +454,7 @@
// pull the row key out of the path
String row = URLDecoder.decode(pathSegments[2], HConstants.UTF8_ENCODING);
- Text key = new Text(row);
+ String key = new Text(row).toString();
String[] columns = request.getParameterValues(COLUMN);
@@ -472,7 +472,7 @@
} else{
// delete each column in turn
for(int i = 0; i < columns.length; i++){
- table.deleteAll(key, new Text(columns[i]));
+ table.deleteAll(key, new Text(columns[i]).toString());
}
}
response.setStatus(202);
--
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[jira] Commented: (HBASE-764) The name of column request has
padding zero using REST interface
Posted by "sishen.freecity (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HBASE-764?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12616176#action_12616176 ]
sishen.freecity commented on HBASE-764:
---------------------------------------
Hi, stack.
It works for me. Actually it's was my first version of patch.
I just don't want why the author using the Text instead of String directly. Maybe his reason is to use UTF8 string in the hbase. So i use String -> Text -> toString. Is UTF8 the default charset?
I'd like to see the REST interface work with HBase. It's better for the integration with other languages. Thanks for all your hard work.
> The name of column request has padding zero using REST interface
> ----------------------------------------------------------------
>
> Key: HBASE-764
> URL: https://issues.apache.org/jira/browse/HBASE-764
> Project: Hadoop HBase
> Issue Type: Bug
> Components: rest
> Affects Versions: 0.2.0
> Environment: Debian GNU/Linux, Java5
> Reporter: sishen.freecity
> Attachments: rest_column-v2.patch, rest_column.patch
>
> Original Estimate: 0.5h
> Remaining Estimate: 0.5h
>
> Today when i play with the REST interface and found the column POST/PUT/GET has a problem.
> When i use the hbase shell to check the data, i found the row name has the padding zero.
> The cause is that TableHandler use Text class to encode the string to the UTF-8. But CharSetEncoder
> will pre-allocate more spaces then the length of String for performance. So we get the padding zero
> when inserting the value to the table. The fix is to get the String instead of the byte[] for the BatchUpdate.
> Below is the patch. Also, the patch includes fixing the wrong use of (bytes[]).toString() using Bytes.toString(byte[])
> Index: src/java/org/apache/hadoop/hbase/rest/TableHandler.java
> ===================================================================
> --- src/java/org/apache/hadoop/hbase/rest/TableHandler.java (revision 678664)
> +++ src/java/org/apache/hadoop/hbase/rest/TableHandler.java (working copy)
> @@ -174,7 +174,7 @@
>
> // copy over those cells with requested column names
> for(byte [] current_column: columns_retrieved) {
> - if(requested_columns_set.contains(current_column.toString())){
> + if(requested_columns_set.contains(Bytes.toString(current_column))){
> m.put(current_column, prefiltered_result.get(current_column));
> }
> }
> @@ -295,7 +295,7 @@
>
> try{
> // start an update
> - Text key = new Text(row);
> + String key = new Text(row).toString();
> batchUpdate = timestamp == null ?
> new BatchUpdate(key) : new BatchUpdate(key, Long.parseLong(timestamp));
>
> @@ -308,7 +308,7 @@
>
> // extract the name and value children
> Node name_node = column.getElementsByTagName("name").item(0);
> - Text name = new Text(name_node.getFirstChild().getNodeValue());
> + String name = new Text(name_node.getFirstChild().getNodeValue()).toString();
>
> Node value_node = column.getElementsByTagName("value").item(0);
>
> @@ -356,7 +356,7 @@
> XMLOutputter outputter = getXMLOutputter(response.getWriter());
> outputter.startTag("regions");
> for (int i = 0; i < startKeys.length; i++) {
> - doElement(outputter, "region", startKeys[i].toString());
> + doElement(outputter, "region", Bytes.toString(startKeys[i]));
> }
> outputter.endTag();
> outputter.endDocument();
> @@ -368,7 +368,7 @@
> PrintWriter out = response.getWriter();
> for (int i = 0; i < startKeys.length; i++) {
> // TODO: Add in the server location. Is it needed?
> - out.print(startKeys[i].toString());
> + out.print(Bytes.toString(startKeys[i]));
> }
> out.close();
> break;
> @@ -454,7 +454,7 @@
> // pull the row key out of the path
> String row = URLDecoder.decode(pathSegments[2], HConstants.UTF8_ENCODING);
>
> - Text key = new Text(row);
> + String key = new Text(row).toString();
>
> String[] columns = request.getParameterValues(COLUMN);
>
> @@ -472,7 +472,7 @@
> } else{
> // delete each column in turn
> for(int i = 0; i < columns.length; i++){
> - table.deleteAll(key, new Text(columns[i]));
> + table.deleteAll(key, new Text(columns[i]).toString());
> }
> }
> response.setStatus(202);
--
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[jira] Updated: (HBASE-764) The name of column request has padding
zero using REST interface
Posted by "stack (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HBASE-764?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
stack updated HBASE-764:
------------------------
Resolution: Fixed
Fix Version/s: 0.2.0
Status: Resolved (was: Patch Available)
Committed. Thanks for the patch Sishen.
I think the Text stuff is just left-over from the days when hbase was all Text (now its all byte arrays). Regards encoding, when you pass a String into BatchUpdate, it'll do getBytes("UTF-8") on the passed String so yes, default is UTF-8 everything. If you want to do another encoding, you could manage the String.getBytes yourself passing an alternate encoding.
Keep banging on the REST. There may be more lurkers in there yet, stuff that hasn't been updated to match the new all-byte-arrays-all-the-time regime.
> The name of column request has padding zero using REST interface
> ----------------------------------------------------------------
>
> Key: HBASE-764
> URL: https://issues.apache.org/jira/browse/HBASE-764
> Project: Hadoop HBase
> Issue Type: Bug
> Components: rest
> Affects Versions: 0.2.0
> Environment: Debian GNU/Linux, Java5
> Reporter: sishen.freecity
> Fix For: 0.2.0
>
> Attachments: rest_column-v2.patch, rest_column.patch
>
> Original Estimate: 0.5h
> Remaining Estimate: 0.5h
>
> Today when i play with the REST interface and found the column POST/PUT/GET has a problem.
> When i use the hbase shell to check the data, i found the row name has the padding zero.
> The cause is that TableHandler use Text class to encode the string to the UTF-8. But CharSetEncoder
> will pre-allocate more spaces then the length of String for performance. So we get the padding zero
> when inserting the value to the table. The fix is to get the String instead of the byte[] for the BatchUpdate.
> Below is the patch. Also, the patch includes fixing the wrong use of (bytes[]).toString() using Bytes.toString(byte[])
> Index: src/java/org/apache/hadoop/hbase/rest/TableHandler.java
> ===================================================================
> --- src/java/org/apache/hadoop/hbase/rest/TableHandler.java (revision 678664)
> +++ src/java/org/apache/hadoop/hbase/rest/TableHandler.java (working copy)
> @@ -174,7 +174,7 @@
>
> // copy over those cells with requested column names
> for(byte [] current_column: columns_retrieved) {
> - if(requested_columns_set.contains(current_column.toString())){
> + if(requested_columns_set.contains(Bytes.toString(current_column))){
> m.put(current_column, prefiltered_result.get(current_column));
> }
> }
> @@ -295,7 +295,7 @@
>
> try{
> // start an update
> - Text key = new Text(row);
> + String key = new Text(row).toString();
> batchUpdate = timestamp == null ?
> new BatchUpdate(key) : new BatchUpdate(key, Long.parseLong(timestamp));
>
> @@ -308,7 +308,7 @@
>
> // extract the name and value children
> Node name_node = column.getElementsByTagName("name").item(0);
> - Text name = new Text(name_node.getFirstChild().getNodeValue());
> + String name = new Text(name_node.getFirstChild().getNodeValue()).toString();
>
> Node value_node = column.getElementsByTagName("value").item(0);
>
> @@ -356,7 +356,7 @@
> XMLOutputter outputter = getXMLOutputter(response.getWriter());
> outputter.startTag("regions");
> for (int i = 0; i < startKeys.length; i++) {
> - doElement(outputter, "region", startKeys[i].toString());
> + doElement(outputter, "region", Bytes.toString(startKeys[i]));
> }
> outputter.endTag();
> outputter.endDocument();
> @@ -368,7 +368,7 @@
> PrintWriter out = response.getWriter();
> for (int i = 0; i < startKeys.length; i++) {
> // TODO: Add in the server location. Is it needed?
> - out.print(startKeys[i].toString());
> + out.print(Bytes.toString(startKeys[i]));
> }
> out.close();
> break;
> @@ -454,7 +454,7 @@
> // pull the row key out of the path
> String row = URLDecoder.decode(pathSegments[2], HConstants.UTF8_ENCODING);
>
> - Text key = new Text(row);
> + String key = new Text(row).toString();
>
> String[] columns = request.getParameterValues(COLUMN);
>
> @@ -472,7 +472,7 @@
> } else{
> // delete each column in turn
> for(int i = 0; i < columns.length; i++){
> - table.deleteAll(key, new Text(columns[i]));
> + table.deleteAll(key, new Text(columns[i]).toString());
> }
> }
> response.setStatus(202);
--
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[jira] Updated: (HBASE-764) The name of column request has padding
zero using REST interface
Posted by "sishen.freecity (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HBASE-764?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
sishen.freecity updated HBASE-764:
----------------------------------
Status: Patch Available (was: Open)
> The name of column request has padding zero using REST interface
> ----------------------------------------------------------------
>
> Key: HBASE-764
> URL: https://issues.apache.org/jira/browse/HBASE-764
> Project: Hadoop HBase
> Issue Type: Bug
> Components: rest
> Affects Versions: 0.2.0
> Environment: Debian GNU/Linux, Java5
> Reporter: sishen.freecity
> Original Estimate: 0.5h
> Remaining Estimate: 0.5h
>
> Today when i play with the REST interface and found the column POST/PUT/GET has a problem.
> When i use the hbase shell to check the data, i found the row name has the padding zero.
> The cause is that TableHandler use Text class to encode the string to the UTF-8. But CharSetEncoder
> will pre-allocate more spaces then the length of String for performance. So we get the padding zero
> when inserting the value to the table. The fix is to get the String instead of the byte[] for the BatchUpdate.
> Below is the patch. Also, the patch includes fixing the wrong use of (bytes[]).toString() using Bytes.toString(byte[])
> Index: src/java/org/apache/hadoop/hbase/rest/TableHandler.java
> ===================================================================
> --- src/java/org/apache/hadoop/hbase/rest/TableHandler.java (revision 678664)
> +++ src/java/org/apache/hadoop/hbase/rest/TableHandler.java (working copy)
> @@ -174,7 +174,7 @@
>
> // copy over those cells with requested column names
> for(byte [] current_column: columns_retrieved) {
> - if(requested_columns_set.contains(current_column.toString())){
> + if(requested_columns_set.contains(Bytes.toString(current_column))){
> m.put(current_column, prefiltered_result.get(current_column));
> }
> }
> @@ -295,7 +295,7 @@
>
> try{
> // start an update
> - Text key = new Text(row);
> + String key = new Text(row).toString();
> batchUpdate = timestamp == null ?
> new BatchUpdate(key) : new BatchUpdate(key, Long.parseLong(timestamp));
>
> @@ -308,7 +308,7 @@
>
> // extract the name and value children
> Node name_node = column.getElementsByTagName("name").item(0);
> - Text name = new Text(name_node.getFirstChild().getNodeValue());
> + String name = new Text(name_node.getFirstChild().getNodeValue()).toString();
>
> Node value_node = column.getElementsByTagName("value").item(0);
>
> @@ -356,7 +356,7 @@
> XMLOutputter outputter = getXMLOutputter(response.getWriter());
> outputter.startTag("regions");
> for (int i = 0; i < startKeys.length; i++) {
> - doElement(outputter, "region", startKeys[i].toString());
> + doElement(outputter, "region", Bytes.toString(startKeys[i]));
> }
> outputter.endTag();
> outputter.endDocument();
> @@ -368,7 +368,7 @@
> PrintWriter out = response.getWriter();
> for (int i = 0; i < startKeys.length; i++) {
> // TODO: Add in the server location. Is it needed?
> - out.print(startKeys[i].toString());
> + out.print(Bytes.toString(startKeys[i]));
> }
> out.close();
> break;
> @@ -454,7 +454,7 @@
> // pull the row key out of the path
> String row = URLDecoder.decode(pathSegments[2], HConstants.UTF8_ENCODING);
>
> - Text key = new Text(row);
> + String key = new Text(row).toString();
>
> String[] columns = request.getParameterValues(COLUMN);
>
> @@ -472,7 +472,7 @@
> } else{
> // delete each column in turn
> for(int i = 0; i < columns.length; i++){
> - table.deleteAll(key, new Text(columns[i]));
> + table.deleteAll(key, new Text(columns[i]).toString());
> }
> }
> response.setStatus(202);
--
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[jira] Updated: (HBASE-764) The name of column request has padding
zero using REST interface
Posted by "sishen.freecity (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HBASE-764?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
sishen.freecity updated HBASE-764:
----------------------------------
Attachment: rest_column.patch
> The name of column request has padding zero using REST interface
> ----------------------------------------------------------------
>
> Key: HBASE-764
> URL: https://issues.apache.org/jira/browse/HBASE-764
> Project: Hadoop HBase
> Issue Type: Bug
> Components: rest
> Affects Versions: 0.2.0
> Environment: Debian GNU/Linux, Java5
> Reporter: sishen.freecity
> Attachments: rest_column.patch
>
> Original Estimate: 0.5h
> Remaining Estimate: 0.5h
>
> Today when i play with the REST interface and found the column POST/PUT/GET has a problem.
> When i use the hbase shell to check the data, i found the row name has the padding zero.
> The cause is that TableHandler use Text class to encode the string to the UTF-8. But CharSetEncoder
> will pre-allocate more spaces then the length of String for performance. So we get the padding zero
> when inserting the value to the table. The fix is to get the String instead of the byte[] for the BatchUpdate.
> Below is the patch. Also, the patch includes fixing the wrong use of (bytes[]).toString() using Bytes.toString(byte[])
> Index: src/java/org/apache/hadoop/hbase/rest/TableHandler.java
> ===================================================================
> --- src/java/org/apache/hadoop/hbase/rest/TableHandler.java (revision 678664)
> +++ src/java/org/apache/hadoop/hbase/rest/TableHandler.java (working copy)
> @@ -174,7 +174,7 @@
>
> // copy over those cells with requested column names
> for(byte [] current_column: columns_retrieved) {
> - if(requested_columns_set.contains(current_column.toString())){
> + if(requested_columns_set.contains(Bytes.toString(current_column))){
> m.put(current_column, prefiltered_result.get(current_column));
> }
> }
> @@ -295,7 +295,7 @@
>
> try{
> // start an update
> - Text key = new Text(row);
> + String key = new Text(row).toString();
> batchUpdate = timestamp == null ?
> new BatchUpdate(key) : new BatchUpdate(key, Long.parseLong(timestamp));
>
> @@ -308,7 +308,7 @@
>
> // extract the name and value children
> Node name_node = column.getElementsByTagName("name").item(0);
> - Text name = new Text(name_node.getFirstChild().getNodeValue());
> + String name = new Text(name_node.getFirstChild().getNodeValue()).toString();
>
> Node value_node = column.getElementsByTagName("value").item(0);
>
> @@ -356,7 +356,7 @@
> XMLOutputter outputter = getXMLOutputter(response.getWriter());
> outputter.startTag("regions");
> for (int i = 0; i < startKeys.length; i++) {
> - doElement(outputter, "region", startKeys[i].toString());
> + doElement(outputter, "region", Bytes.toString(startKeys[i]));
> }
> outputter.endTag();
> outputter.endDocument();
> @@ -368,7 +368,7 @@
> PrintWriter out = response.getWriter();
> for (int i = 0; i < startKeys.length; i++) {
> // TODO: Add in the server location. Is it needed?
> - out.print(startKeys[i].toString());
> + out.print(Bytes.toString(startKeys[i]));
> }
> out.close();
> break;
> @@ -454,7 +454,7 @@
> // pull the row key out of the path
> String row = URLDecoder.decode(pathSegments[2], HConstants.UTF8_ENCODING);
>
> - Text key = new Text(row);
> + String key = new Text(row).toString();
>
> String[] columns = request.getParameterValues(COLUMN);
>
> @@ -472,7 +472,7 @@
> } else{
> // delete each column in turn
> for(int i = 0; i < columns.length; i++){
> - table.deleteAll(key, new Text(columns[i]));
> + table.deleteAll(key, new Text(columns[i]).toString());
> }
> }
> response.setStatus(202);
--
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-
You can reply to this email to add a comment to the issue online.
[jira] Updated: (HBASE-764) The name of column request has padding
zero using REST interface
Posted by "stack (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HBASE-764?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
stack updated HBASE-764:
------------------------
Attachment: rest_column-v2.patch
Sishen:
I edited your patch to remove going String -> Text -> toString. Please review/try it. If its OK with you, +1 it and I'll commit it.
I'd like to get these REST fixes into the 0.2.0 second release candidate if possible. Thanks.
> The name of column request has padding zero using REST interface
> ----------------------------------------------------------------
>
> Key: HBASE-764
> URL: https://issues.apache.org/jira/browse/HBASE-764
> Project: Hadoop HBase
> Issue Type: Bug
> Components: rest
> Affects Versions: 0.2.0
> Environment: Debian GNU/Linux, Java5
> Reporter: sishen.freecity
> Attachments: rest_column-v2.patch, rest_column.patch
>
> Original Estimate: 0.5h
> Remaining Estimate: 0.5h
>
> Today when i play with the REST interface and found the column POST/PUT/GET has a problem.
> When i use the hbase shell to check the data, i found the row name has the padding zero.
> The cause is that TableHandler use Text class to encode the string to the UTF-8. But CharSetEncoder
> will pre-allocate more spaces then the length of String for performance. So we get the padding zero
> when inserting the value to the table. The fix is to get the String instead of the byte[] for the BatchUpdate.
> Below is the patch. Also, the patch includes fixing the wrong use of (bytes[]).toString() using Bytes.toString(byte[])
> Index: src/java/org/apache/hadoop/hbase/rest/TableHandler.java
> ===================================================================
> --- src/java/org/apache/hadoop/hbase/rest/TableHandler.java (revision 678664)
> +++ src/java/org/apache/hadoop/hbase/rest/TableHandler.java (working copy)
> @@ -174,7 +174,7 @@
>
> // copy over those cells with requested column names
> for(byte [] current_column: columns_retrieved) {
> - if(requested_columns_set.contains(current_column.toString())){
> + if(requested_columns_set.contains(Bytes.toString(current_column))){
> m.put(current_column, prefiltered_result.get(current_column));
> }
> }
> @@ -295,7 +295,7 @@
>
> try{
> // start an update
> - Text key = new Text(row);
> + String key = new Text(row).toString();
> batchUpdate = timestamp == null ?
> new BatchUpdate(key) : new BatchUpdate(key, Long.parseLong(timestamp));
>
> @@ -308,7 +308,7 @@
>
> // extract the name and value children
> Node name_node = column.getElementsByTagName("name").item(0);
> - Text name = new Text(name_node.getFirstChild().getNodeValue());
> + String name = new Text(name_node.getFirstChild().getNodeValue()).toString();
>
> Node value_node = column.getElementsByTagName("value").item(0);
>
> @@ -356,7 +356,7 @@
> XMLOutputter outputter = getXMLOutputter(response.getWriter());
> outputter.startTag("regions");
> for (int i = 0; i < startKeys.length; i++) {
> - doElement(outputter, "region", startKeys[i].toString());
> + doElement(outputter, "region", Bytes.toString(startKeys[i]));
> }
> outputter.endTag();
> outputter.endDocument();
> @@ -368,7 +368,7 @@
> PrintWriter out = response.getWriter();
> for (int i = 0; i < startKeys.length; i++) {
> // TODO: Add in the server location. Is it needed?
> - out.print(startKeys[i].toString());
> + out.print(Bytes.toString(startKeys[i]));
> }
> out.close();
> break;
> @@ -454,7 +454,7 @@
> // pull the row key out of the path
> String row = URLDecoder.decode(pathSegments[2], HConstants.UTF8_ENCODING);
>
> - Text key = new Text(row);
> + String key = new Text(row).toString();
>
> String[] columns = request.getParameterValues(COLUMN);
>
> @@ -472,7 +472,7 @@
> } else{
> // delete each column in turn
> for(int i = 0; i < columns.length; i++){
> - table.deleteAll(key, new Text(columns[i]));
> + table.deleteAll(key, new Text(columns[i]).toString());
> }
> }
> response.setStatus(202);
--
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