EmmyMiao87 commented on a change in pull request #5703:
URL: https://github.com/apache/incubator-doris/pull/5703#discussion_r628110103
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File path: fe/fe-core/src/main/java/org/apache/doris/common/Config.java
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@@ -1367,4 +1367,12 @@
*/
@ConfField
public static int grpc_max_message_size_bytes = 1 * 1024 * 1024 * 1024; //
1GB
+
+ /**
+ * Used to limit the maximum number of partitions that can be created when
creating a dynamic partition table,
+ * to avoid creating too many partitions at one time.
+ * The number is determined by "start" and "end" in the dynamic partition
parameters.
+ */
+ @ConfField(mutable = true, masterOnly = true)
+ public static int max_dynamic_partition_num = 500;
Review comment:
新配置加个文档说明吧
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File path: docs/zh-CN/administrator-guide/dynamic-partition.md
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@@ -122,6 +122,12 @@ under the License.
* `dynamic_partition.start_day_of_month`
当 `time_unit` 为 `MONTH` 时，该参数用于指定每月的起始日期。取值为 1 到 28。其中 1 表示每月1号，28
表示每月28号。默认为 1，即表示每月以1号位起始点。暂不支持以29、30、31号为起始日，以避免因闰年或闰月带来的歧义。
+
+* `dynamic_partition.create_history_partition`
+
+ 默认为 false。当置为 true 时，Doris 会自动创建由 start 到 end 的所有分区。同时，FE 的参数
`max_dynamic_partition_num` 会限制总分区数量，以避免一次性创建过多分区。
Review comment:
如果 max_dynamic_partition_num 大于 end - start 则无法创建动态分区，并且报错xxx。描述一下
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