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new e3ba453e9bc [feature](variable) add read_only and super_read_only
(#33795)
e3ba453e9bc is described below
commit e3ba453e9bc9af21901a41cdd78e6810e95f9a6a
Author: Mingyu Chen <morning...@163.com>
AuthorDate: Thu Apr 18 23:56:19 2024 +0800
[feature](variable) add read_only and super_read_only (#33795)
---
.../java/org/apache/doris/qe/GlobalVariable.java | 14 ++++++++++++-
.../data/variable_p0/set_and_unset_variable.out | 24 ++++++++++++++++++++++
.../variable_p0/set_and_unset_variable.groovy | 22 ++++++++++++++++++++
3 files changed, 59 insertions(+), 1 deletion(-)
diff --git a/fe/fe-core/src/main/java/org/apache/doris/qe/GlobalVariable.java
b/fe/fe-core/src/main/java/org/apache/doris/qe/GlobalVariable.java
index 30f91c6f8c1..15990e15ffe 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/qe/GlobalVariable.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/qe/GlobalVariable.java
@@ -57,6 +57,8 @@ public final class GlobalVariable {
public static final String AUDIT_PLUGIN_MAX_SQL_LENGTH =
"audit_plugin_max_sql_length";
public static final String ENABLE_GET_ROW_COUNT_FROM_FILE_LIST =
"enable_get_row_count_from_file_list";
+ public static final String READ_ONLY = "read_only";
+ public static final String SUPER_READ_ONLY = "super_read_only";
@VariableMgr.VarAttr(name = VERSION_COMMENT, flag = VariableMgr.READ_ONLY)
public static String versionComment = "Doris version "
@@ -135,7 +137,17 @@ public final class GlobalVariable {
+ "Getting file list may be a time-consuming
operation. "
+ "If you don't need to estimate the number of
rows in the table "
+ "or it affects performance, you can disable this
feature."})
- public static boolean enable_get_row_count_from_file_list = true;
+ public static boolean enable_get_row_count_from_file_list = false;
+
+ @VariableMgr.VarAttr(name = READ_ONLY, flag = VariableMgr.GLOBAL,
+ description = {"仅用于兼容MySQL生态，暂无实际意义",
+ "Only for compatibility with MySQL ecosystem, no practical
meaning"})
+ public static boolean read_only = true;
+
+ @VariableMgr.VarAttr(name = SUPER_READ_ONLY, flag = VariableMgr.GLOBAL,
+ description = {"仅用于兼容MySQL生态，暂无实际意义",
+ "Only for compatibility with MySQL ecosystem, no practical
meaning"})
+ public static boolean super_read_only = true;
// Don't allow creating instance.
private GlobalVariable() {
diff --git a/regression-test/data/variable_p0/set_and_unset_variable.out
b/regression-test/data/variable_p0/set_and_unset_variable.out
index e7f0dc2fdf1..33dd8af7bc1 100644
--- a/regression-test/data/variable_p0/set_and_unset_variable.out
+++ b/regression-test/data/variable_p0/set_and_unset_variable.out
@@ -161,3 +161,27 @@ deprecated_enable_local_exchange true true 0
-- !cmd --
show_hidden_columns false false 0
+-- !cmd --
+read_only true true 0
+
+-- !cmd --
+0
+
+-- !cmd --
+read_only true true 0
+
+-- !cmd --
+read_only true true 0
+
+-- !cmd --
+super_read_only true true 0
+
+-- !cmd --
+0
+
+-- !cmd --
+super_read_only true true 0
+
+-- !cmd --
+super_read_only true true 0
+
diff --git a/regression-test/suites/variable_p0/set_and_unset_variable.groovy
b/regression-test/suites/variable_p0/set_and_unset_variable.groovy
index 47749774336..c637d3ae223 100644
--- a/regression-test/suites/variable_p0/set_and_unset_variable.groovy
+++ b/regression-test/suites/variable_p0/set_and_unset_variable.groovy
@@ -83,4 +83,26 @@ suite("set_and_unset_variable") {
qt_cmd """show global variables like 'experimental_enable_agg_state'"""
qt_cmd """show global variables like 'deprecated_enable_local_exchange'"""
qt_cmd """show global variables like 'show_hidden_columns'"""
+
+ // test read_only
+ qt_cmd """show variables like 'read_only'"""
+ test {
+ sql "set read_only=true"
+ exception "should be set with SET GLOBAL"
+ }
+ qt_cmd "set global read_only=true"
+ qt_cmd """show global variables like 'read_only'"""
+ qt_cmd """show variables like 'read_only'"""
+ sql "set global read_only=false"
+
+ // test super_read_only
+ qt_cmd """show variables like 'super_read_only'"""
+ test {
+ sql "set super_read_only=true"
+ exception "should be set with SET GLOBAL"
+ }
+ qt_cmd "set global super_read_only=true"
+ qt_cmd """show global variables like 'super_read_only'"""
+ qt_cmd """show variables like 'super_read_only'"""
+ sql "set global super_read_only=false"
}
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