[Feature] support hour time unit with dynamic parition

docs/en/administrator-guide/dynamic-partition.md

@@ -81,7 +81,9 @@ The rules of dynamic partition are prefixed with `dynamic_partition.`:
 
 * `dynamic_partition.time_unit`
 
-    The unit for dynamic partition scheduling. Can be specified as `DAY`,` WEEK`, and `MONTH`, means to create or delete partitions by day, week, and month, respectively.
+    The unit for dynamic partition scheduling. Can be specified as `HOUR`,`DAY`,` WEEK`, and `MONTH`, means to create or delete partitions by hour, day, week, and month, respectively.
+
+    When specified as `HOUR`, the suffix format of the dynamically created partition name is `yyyyMMddHH`, for example, `2020032501`.
 
     When specified as `DAY`, the suffix format of the dynamically created partition name is `yyyyMMdd`, for example, `20200325`.
 

docs/zh-CN/administrator-guide/dynamic-partition.md

@@ -79,8 +79,10 @@ under the License.
 
 * `dynamic_partition.time_unit`
 
-    动态分区调度的单位。可指定为 `DAY`、`WEEK`、`MONTH`。分别表示按天、按星期、按月进行分区创建或删除。
+    动态分区调度的单位。可指定为 `HOUR`、`DAY`、`WEEK`、`MONTH`。分别表示按天、按星期、按月进行分区创建或删除。
 
+    当指定为 `HOUR` 时，动态创建的分区名后缀格式为 `yyyyMMddHH`，例如`2020032501`。
+
     当指定为 `DAY` 时，动态创建的分区名后缀格式为 `yyyyMMdd`，例如`20200325`。
 
     当指定为 `WEEK` 时，动态创建的分区名后缀格式为`yyyy_ww`。即当前日期属于这一年的第几周，例如 `2020-03-25` 创建的分区名后缀为 `2020_13`, 表明目前为2020年第13周。

fe/fe-core/src/main/java/org/apache/doris/common/ErrorCode.java

@@ -210,7 +210,7 @@ public enum ErrorCode {
             "Table %s is not a colocated table"),
     ERR_INVALID_OPERATION(5065, new byte[] { '4', '2', '0', '0', '0' }, "Operation %s is invalid"),
     ERROR_DYNAMIC_PARTITION_TIME_UNIT(5065, new byte[] {'4', '2', '0', '0', '0'},
-            "Unsupported time unit %s. Expect DAY/WEEK/MONTH."),
+            "Unsupported time unit %s. Expect HOUR/DAY/WEEK/MONTH."),
     ERROR_DYNAMIC_PARTITION_START_ZERO(5066, new byte[] {'4', '2', '0', '0', '0'},
             "Dynamic partition start must less than 0"),
     ERROR_DYNAMIC_PARTITION_START_FORMAT(5066, new byte[] {'4', '2', '0', '0', '0'},

fe/fe-core/src/main/java/org/apache/doris/common/util/DynamicPartitionUtil.java

@@ -63,6 +63,7 @@ public class DynamicPartitionUtil {
     public static void checkTimeUnit(String timeUnit) throws DdlException {
         if (Strings.isNullOrEmpty(timeUnit)
                 || !(timeUnit.equalsIgnoreCase(TimeUnit.DAY.toString())
+                || timeUnit.equalsIgnoreCase(TimeUnit.HOUR.toString())
                 || timeUnit.equalsIgnoreCase(TimeUnit.WEEK.toString())
                 || timeUnit.equalsIgnoreCase(TimeUnit.MONTH.toString()))) {
             ErrorReport.reportDdlException(ErrorCode.ERROR_DYNAMIC_PARTITION_TIME_UNIT, timeUnit);
@@ -365,6 +366,8 @@ public static String getFormattedPartitionName(TimeZone tz, String formattedDate
             return formattedDateStr.substring(0, 8);
         } else if (timeUnit.equalsIgnoreCase(TimeUnit.MONTH.toString())) {
             return formattedDateStr.substring(0, 6);
+        } else if (timeUnit.equalsIgnoreCase(TimeUnit.HOUR.toString())) {
+            return formattedDateStr.substring(0, 10);
         } else {
             formattedDateStr = formattedDateStr.substring(0, 8);
             Calendar calendar = Calendar.getInstance(tz);
@@ -385,18 +388,36 @@ public static String getFormattedPartitionName(TimeZone tz, String formattedDate
     }
 
     // return the partition range date string formatted as yyyy-MM-dd[ HH:mm::ss]
-    // TODO: support HOUR and YEAR
+    // add support: HOUR by caoyang10
+    // TODO: support YEAR
     public static String getPartitionRangeString(DynamicPartitionProperty property, ZonedDateTime current,
             int offset, String format) {
         String timeUnit = property.getTimeUnit();
         if (timeUnit.equalsIgnoreCase(TimeUnit.DAY.toString())) {
             return getPartitionRangeOfDay(current, offset, format);
         } else if (timeUnit.equalsIgnoreCase(TimeUnit.WEEK.toString())) {
             return getPartitionRangeOfWeek(current, offset, property.getStartOfWeek(), format);
-        } else { // MONTH
+        } else if (timeUnit.equalsIgnoreCase(TimeUnit.HOUR.toString())) { // MONTH
+            return getPartitionRangeOfHour(current, offset, format);
+        } else {
             return getPartitionRangeOfMonth(current, offset, property.getStartOfMonth(), format);
         }
     }
+
+    /**
+     * return formatted string of partition range in HOUR granularity.
+     * offset: The offset from the current hour. 0 means current hour, 1 means next hour, -1 last hour.
+     * format: the format of the return date string.
+     *
+     * Eg:
+     *  Today is 2020-05-24 00:12:34, offset = -1
+     *  It will return 2020-05-23 23:00:00
+     *  Today is 2020-05-24 00, offset = 1
+     *  It will return 2020-05-24 01:00:00
+     */
+    private static String getPartitionRangeOfHour(ZonedDateTime current, int offset, String format) {
+        return getFormattedTimeWithoutMinuteSecond(current.plusHours(offset), format);
+    }
 
     /**
      * return formatted string of partition range in DAY granularity.
@@ -460,6 +481,11 @@ private static String getFormattedTimeWithoutHourMinuteSecond(ZonedDateTime zone
         return DateTimeFormatter.ofPattern(format).format(timeWithoutHourMinuteSecond);
     }
 
+    private static String getFormattedTimeWithoutMinuteSecond(ZonedDateTime zonedDateTime, String format) {
+        ZonedDateTime timeWithoutMinuteSecond = zonedDateTime.withMinute(0).withSecond(0);
+        return DateTimeFormatter.ofPattern(format).format(timeWithoutMinuteSecond);
+    }
+
     /**
      * Used to indicate the start date.
      * Taking the year as the granularity, it can indicate the month and day as the start date.