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Posted to commits@doris.apache.org by da...@apache.org on 2026/03/19 06:38:51 UTC
(doris) 01/01: [improve](partition) Increase max_dynamic/auto_partition_num defaults to 20000 and add near-limit metrics
This is an automated email from the ASF dual-hosted git repository.
dataroaring pushed a commit to branch improve/partition-limit-defaults-and-metrics
in repository https://gitbox.apache.org/repos/asf/doris.git
commit b3f35907bc29ae21d77e0be709385677b6513267
Author: Yongqiang YANG <da...@gmail.com>
AuthorDate: Wed Mar 18 23:38:28 2026 -0700
[improve](partition) Increase max_dynamic/auto_partition_num defaults to 20000 and add near-limit metrics
Raise the default limits from 500/2000 to 20000 for both max_dynamic_partition_num
and max_auto_partition_num to better match modern production workloads.
Add warning logs and Prometheus counter metrics (auto_partition_near_limit_count,
dynamic_partition_near_limit_count) that fire when partition counts exceed 80%
of their configured limits, enabling proactive monitoring before hard failures.
Co-Authored-By: Claude Opus 4.6 <no...@anthropic.com>
---
.../src/main/java/org/apache/doris/common/Config.java | 6 +++---
.../apache/doris/common/util/DynamicPartitionUtil.java | 16 +++++++++++++---
.../main/java/org/apache/doris/metric/MetricRepo.java | 14 ++++++++++++++
.../org/apache/doris/service/FrontendServiceImpl.java | 14 ++++++++++++--
4 files changed, 42 insertions(+), 8 deletions(-)
diff --git a/fe/fe-common/src/main/java/org/apache/doris/common/Config.java b/fe/fe-common/src/main/java/org/apache/doris/common/Config.java
index f9be5d87559..514e28b722c 100644
--- a/fe/fe-common/src/main/java/org/apache/doris/common/Config.java
+++ b/fe/fe-common/src/main/java/org/apache/doris/common/Config.java
@@ -1521,7 +1521,7 @@ public class Config extends ConfigBase {
* 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;
+ public static int max_dynamic_partition_num = 20000;
/**
* Used to limit the maximum number of partitions that can be created when creating multi partition,
@@ -2690,8 +2690,8 @@ public class Config extends ConfigBase {
@ConfField(mutable = true, masterOnly = true, description = {
"For auto-partitioned tables to prevent users from accidentally creating a large number of partitions, "
- + "the number of partitions allowed per OLAP table is `max_auto_partition_num`. Default 2000."})
- public static int max_auto_partition_num = 2000;
+ + "the number of partitions allowed per OLAP table is `max_auto_partition_num`. Default 20000."})
+ public static int max_auto_partition_num = 20000;
@ConfField(mutable = true, masterOnly = true, description = {
"The maximum difference in the number of tablets of each BE in partition rebalance mode. "
diff --git a/fe/fe-core/src/main/java/org/apache/doris/common/util/DynamicPartitionUtil.java b/fe/fe-core/src/main/java/org/apache/doris/common/util/DynamicPartitionUtil.java
index db12f6266ea..733e8a38f4d 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/common/util/DynamicPartitionUtil.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/common/util/DynamicPartitionUtil.java
@@ -42,6 +42,7 @@ import org.apache.doris.common.ErrorReport;
import org.apache.doris.common.FeConstants;
import org.apache.doris.common.FeNameFormat;
import org.apache.doris.common.UserException;
+import org.apache.doris.metric.MetricRepo;
import org.apache.doris.policy.StoragePolicy;
import org.apache.doris.resource.Tag;
import org.apache.doris.thrift.TStorageMedium;
@@ -641,10 +642,19 @@ public class DynamicPartitionUtil {
}
expectCreatePartitionNum = (long) end - start;
- if (!isReplay && hasEnd && (expectCreatePartitionNum > Config.max_dynamic_partition_num)
+ if (!isReplay && hasEnd
&& Boolean.parseBoolean(analyzedProperties.getOrDefault(DynamicPartitionProperty.ENABLE, "true"))) {
- throw new DdlException("Too many dynamic partitions: "
- + expectCreatePartitionNum + ". Limit: " + Config.max_dynamic_partition_num);
+ if (expectCreatePartitionNum > Config.max_dynamic_partition_num) {
+ throw new DdlException("Too many dynamic partitions: "
+ + expectCreatePartitionNum + ". Limit: " + Config.max_dynamic_partition_num);
+ } else if (expectCreatePartitionNum > Config.max_dynamic_partition_num * 0.8) {
+ LOG.warn("Dynamic partition count {} is approaching limit {} (>80%)."
+ + " Consider increasing max_dynamic_partition_num.",
+ expectCreatePartitionNum, Config.max_dynamic_partition_num);
+ if (MetricRepo.isInit) {
+ MetricRepo.COUNTER_DYNAMIC_PARTITION_NEAR_LIMIT.increase(1L);
+ }
+ }
}
if (properties.containsKey(DynamicPartitionProperty.START_DAY_OF_MONTH)) {
diff --git a/fe/fe-core/src/main/java/org/apache/doris/metric/MetricRepo.java b/fe/fe-core/src/main/java/org/apache/doris/metric/MetricRepo.java
index cd0755fd9da..c28c2aeb99f 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/metric/MetricRepo.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/metric/MetricRepo.java
@@ -256,6 +256,10 @@ public final class MetricRepo {
public static GaugeMetricImpl<Long> GAUGE_AVG_PARTITION_SIZE_BYTES;
public static GaugeMetricImpl<Long> GAUGE_AVG_TABLET_SIZE_BYTES;
+ // Partition near-limit warnings
+ public static LongCounterMetric COUNTER_AUTO_PARTITION_NEAR_LIMIT;
+ public static LongCounterMetric COUNTER_DYNAMIC_PARTITION_NEAR_LIMIT;
+
// Agent task
public static LongCounterMetric COUNTER_AGENT_TASK_REQUEST_TOTAL;
public static AutoMappedMetric<LongCounterMetric> COUNTER_AGENT_TASK_TOTAL;
@@ -1040,6 +1044,16 @@ public final class MetricRepo {
GAUGE_AVG_TABLET_SIZE_BYTES = new GaugeMetricImpl<>("avg_tablet_size_bytes", MetricUnit.BYTES, "", 0L);
DORIS_METRIC_REGISTER.addMetrics(GAUGE_AVG_TABLET_SIZE_BYTES);
+ // Partition near-limit warning counters
+ COUNTER_AUTO_PARTITION_NEAR_LIMIT = new LongCounterMetric("auto_partition_near_limit_count",
+ MetricUnit.NOUNIT,
+ "number of times auto partition count exceeded 80% of max_auto_partition_num");
+ DORIS_METRIC_REGISTER.addMetrics(COUNTER_AUTO_PARTITION_NEAR_LIMIT);
+ COUNTER_DYNAMIC_PARTITION_NEAR_LIMIT = new LongCounterMetric("dynamic_partition_near_limit_count",
+ MetricUnit.NOUNIT,
+ "number of times dynamic partition count exceeded 80% of max_dynamic_partition_num");
+ DORIS_METRIC_REGISTER.addMetrics(COUNTER_DYNAMIC_PARTITION_NEAR_LIMIT);
+
COUNTER_AGENT_TASK_REQUEST_TOTAL = new LongCounterMetric("agent_task_request_total", MetricUnit.NOUNIT,
"total agent batch task request send to BE");
DORIS_METRIC_REGISTER.addMetrics(COUNTER_AGENT_TASK_REQUEST_TOTAL);
diff --git a/fe/fe-core/src/main/java/org/apache/doris/service/FrontendServiceImpl.java b/fe/fe-core/src/main/java/org/apache/doris/service/FrontendServiceImpl.java
index f074711854c..cc0f64afd4e 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/service/FrontendServiceImpl.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/service/FrontendServiceImpl.java
@@ -95,6 +95,7 @@ import org.apache.doris.load.routineload.RoutineLoadJob;
import org.apache.doris.load.routineload.RoutineLoadJob.JobState;
import org.apache.doris.load.routineload.RoutineLoadManager;
import org.apache.doris.master.MasterImpl;
+import org.apache.doris.metric.MetricRepo;
import org.apache.doris.meta.MetaContext;
import org.apache.doris.mysql.privilege.AccessControllerManager;
import org.apache.doris.mysql.privilege.PrivPredicate;
@@ -4391,15 +4392,24 @@ public class FrontendServiceImpl implements FrontendService.Iface {
// check partition's number limit. because partitions in addPartitionClauseMap may be duplicated with existing
// partitions, which would lead to false positive. so we should check the partition number AFTER adding new
// partitions using its ACTUAL NUMBER, rather than the sum of existing and requested partitions.
- if (olapTable.getPartitionNum() > Config.max_auto_partition_num) {
+ int partitionNum = olapTable.getPartitionNum();
+ int autoPartitionLimit = Config.max_auto_partition_num;
+ if (partitionNum > autoPartitionLimit) {
String errorMessage = String.format(
"partition numbers %d exceeded limit of variable max_auto_partition_num %d",
- olapTable.getPartitionNum(), Config.max_auto_partition_num);
+ partitionNum, autoPartitionLimit);
LOG.warn(errorMessage);
errorStatus.setErrorMsgs(Lists.newArrayList(errorMessage));
result.setStatus(errorStatus);
LOG.warn("send create partition error status: {}", result);
return result;
+ } else if (partitionNum > autoPartitionLimit * 0.8) {
+ LOG.warn("Table {}.{} auto partition count {} is approaching limit {} (>80%)."
+ + " Consider increasing max_auto_partition_num.",
+ db.getFullName(), olapTable.getName(), partitionNum, autoPartitionLimit);
+ if (MetricRepo.isInit) {
+ MetricRepo.COUNTER_AUTO_PARTITION_NEAR_LIMIT.increase(1L);
+ }
}
// build partition & tablets
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