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new 0ffb71b5589 [improvement](mysql)Support mysql COM_RESET_CONNECTION
command. (#44747)
0ffb71b5589 is described below
commit 0ffb71b558949840bc3d83b073177b0952b82cbb
Author: James <lijib...@selectdb.com>
AuthorDate: Fri Nov 29 18:09:48 2024 +0800
[improvement](mysql)Support mysql COM_RESET_CONNECTION command. (#44747)
### What problem does this PR solve?
Support mysql COM_RESET_CONNECTION command.
Doris server side reset default catalog and return
ctx.getState().setOk()
Python test code:
```
import mysql.connector
connection = mysql.connector.connect(
host="172.20.32.136",
port=29030,
user="root",
password="",
database=""
)
print(connection.cmd_reset_connection())
```
Issue Number: close #xxx
Related PR: #xxx
Problem Summary:
### Release note
None
---
fe/fe-core/src/main/java/org/apache/doris/qe/ConnectContext.java | 5 +++++
fe/fe-core/src/main/java/org/apache/doris/qe/ConnectProcessor.java | 7 +++++++
.../src/main/java/org/apache/doris/qe/MysqlConnectProcessor.java | 3 +++
3 files changed, 15 insertions(+)
diff --git a/fe/fe-core/src/main/java/org/apache/doris/qe/ConnectContext.java
b/fe/fe-core/src/main/java/org/apache/doris/qe/ConnectContext.java
index a16422ba9e5..c21c9ee3f86 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/qe/ConnectContext.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/qe/ConnectContext.java
@@ -342,6 +342,11 @@ public class ConnectContext {
return lastDBOfCatalog.get(catalog);
}
+ // Used by COM_RESET_CONNECTION
+ public void clearLastDBOfCatalog() {
+ lastDBOfCatalog.clear();
+ }
+
public void setNotEvalNondeterministicFunction(boolean
notEvalNondeterministicFunction) {
this.notEvalNondeterministicFunction = notEvalNondeterministicFunction;
}
diff --git a/fe/fe-core/src/main/java/org/apache/doris/qe/ConnectProcessor.java
b/fe/fe-core/src/main/java/org/apache/doris/qe/ConnectProcessor.java
index 2340aa37aeb..fcc6c2362cf 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/qe/ConnectProcessor.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/qe/ConnectProcessor.java
@@ -44,6 +44,7 @@ import org.apache.doris.common.util.DebugUtil;
import org.apache.doris.common.util.SqlUtils;
import org.apache.doris.common.util.Util;
import org.apache.doris.datasource.CatalogIf;
+import org.apache.doris.datasource.InternalCatalog;
import org.apache.doris.metric.MetricRepo;
import org.apache.doris.mysql.MysqlChannel;
import org.apache.doris.mysql.MysqlPacket;
@@ -198,6 +199,12 @@ public abstract class ConnectProcessor {
ctx.getState().setOk();
}
+ protected void handleResetConnection() {
+ ctx.changeDefaultCatalog(InternalCatalog.INTERNAL_CATALOG_NAME);
+ ctx.clearLastDBOfCatalog();
+ ctx.getState().setOk();
+ }
+
protected void handleStmtReset() {
ctx.getState().setOk();
}
diff --git
a/fe/fe-core/src/main/java/org/apache/doris/qe/MysqlConnectProcessor.java
b/fe/fe-core/src/main/java/org/apache/doris/qe/MysqlConnectProcessor.java
index 376d4740e63..da3baced5fa 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/qe/MysqlConnectProcessor.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/qe/MysqlConnectProcessor.java
@@ -264,6 +264,9 @@ public class MysqlConnectProcessor extends ConnectProcessor
{
case COM_SET_OPTION:
handleSetOption();
break;
+ case COM_RESET_CONNECTION:
+ handleResetConnection();
+ break;
default:
ctx.getState().setError(ErrorCode.ERR_UNKNOWN_COM_ERROR,
"Unsupported command(" + command + ")");
LOG.warn("Unsupported command(" + command + ")");
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