To enhance monitoring services, certain Cloud Monitor metrics will be discontinued for the PolarSearch feature of PolarDB for MySQL. This change takes effect on November 15, 2025, at 00:00:00 (UTC+8).
After this date, alert rules that use these metrics will cease to trigger, and their associated monitoring charts will no longer display data. To prevent loss of monitoring coverage and ensure you do not miss critical alerts, please review and update your alert configurations before the discontinuation date.
Discontinuation time
November 15, 2025, at 00:00:00 (UTC+8)
Scope of impact
Affected clusters: All PolarDB for MySQL clusters with the PolarSearch feature enabled.
Key impacts:
Alerts will fail: Alert rules that use the discontinued metrics will not be triggered.
No data in charts: Monitoring charts using these metrics will no longer display historical or real-time data.
Check for usage of discontinued metrics
Go to the Cloud Monitor console. In the navigation pane on the left, choose .
In the filter conditions, set Product to POLARDB Search, and use the Metric Name filter to check for rules that use any of the discontinued metrics listed in the following section. If a rule uses a discontinued metric, replace the metric with a suitable alternative or delete the rule to prevent a loss of alert coverage.
List of discontinued metrics
The following table lists the groups and metric names in Cloud Monitor.
Group | Metric | Name | Description |
Cluster ID | opensearch_cluster_inflight_fetch_number | inflight fetchs | The number of fetch requests for the cluster. |
opensearch_cluster_pending_tasks_number | pending tasks | The number of queued tasks. | |
opensearch_cluster_shards_number | shards number | The total number of shards. | |
opensearch_cluster_task_max_waiting_time_seconds | task waiting | The maximum wait time for a task. | |
opensearch_indices_indexing_index_failed_count | index failed docs | The number of documents that failed to be written. | |
nodeid | opensearch_indices_merges_current_docs_number | merge docs | The number of documents being merged. |
opensearch_indices_merges_current_number | merge num | The number of merge operations. | |
opensearch_indices_merges_current_size_byte | merge bytes | The size of the data being merged. | |
opensearch_indices_indexing_delete_current_number | current delete | The number of documents being deleted. | |
opensearch_indices_indexing_index_time_seconds | index failed docs | Indexing time. The cumulative time spent creating an index. | |
opensearch_indices_indexing_is_throttled_bool | throttle | Indicates whether write throttling is triggered. | |
opensearch_indices_store_size_bytes | store size | The size of the storage space. | |
opensearch_indices_search_query_current_number | query | The number of query operations. | |
opensearch_process_file_descriptors_open_number | Number of open files | The number of open file descriptors. | |
opensearch_threadpool_tasks_number | tasks | The number of tasks in the thread pool. | |
opensearch_threadpool_threads_number | Number of Threads | The number of threads. | |
opensearch_transport_rx_bytes_count | transport rx | The volume of data received by the transport layer. | |
opensearch_transport_server_open_number | transport opens | The number of TCP connections on the transport layer. | |
opensearch_transport_tx_bytes_count | transport tx | The volume of data sent by the transport layer. | |
opensearch_jvm_mem_nonheap_used_bytes | jvm nonheap | The JVM off-heap memory. | |
opensearch_process_mem_total_virtual_bytes | Memory_usage | The amount of memory used. |