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Cloud Monitor:Discontinuation of some PolarSearch metrics for Cloud Monitor

Last Updated:Dec 09, 2025

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

  1. Go to the Cloud Monitor console. In the navigation pane on the left, choose Alerts > Alert Rules.

  2. 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.