PolarSearch will deprecate several monitoring metrics starting 00:00:00, November 15, 2025 (Singapore Standard Time). After this date, alert rules based on these metrics will stop working, and charts for these metrics will no longer display data. To avoid disruptions, review and update your alert configurations.
Deprecation schedule
00:00:00, November 15, 2025 (Singapore Standard Time)
Scope of impact
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Affected clusters: All PolarDB for MySQL clusters with the PolarSearch feature enabled.
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Key impacts:
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Alerts will stop triggering: Alert rules that depend on deprecated metrics will no longer trigger.
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No data in charts: Charts for deprecated metrics will no longer display historical or real-time data.
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Finding affected alert rules
Go to the Cloud Monitor console. In the left-side navigation pane, choose . In the filter options, set Category to PolarDB - Search and filter by Metric Name to find affected alert rules. If you find an affected rule, update it to use an alternative metric or delete it to avoid missing critical alerts.
List of deprecated metrics
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The following table lists the groups and metric names as they appear in Cloud Monitor.
Group
Metric name
Display name
Description
Cluster ID
opensearch_cluster_inflight_fetch_number
inflight fetches
The number of inflight fetch requests for the cluster.
opensearch_cluster_pending_tasks_number
pending tasks
The number of queued tasks.
opensearch_cluster_shards_number
number of shards
The total number of shards.
opensearch_cluster_task_max_waiting_time_seconds
task queue time
The maximum wait time for a task, in seconds.
opensearch_indices_indexing_index_failed_count
failed to index document count
The number of documents that failed to be indexed.
nodeid
opensearch_indices_merges_current_docs_number
merging documents
The number of documents currently being merged.
opensearch_indices_merges_current_number
current merges
The number of active merge operations.
opensearch_indices_merges_current_size_byte
current merge size
The size of the data currently being merged.
opensearch_indices_indexing_delete_current_number
deleting documents
The number of documents currently being deleted.
opensearch_indices_indexing_index_time_seconds
indexing time
The cumulative time spent on indexing.
opensearch_indices_indexing_is_throttled_bool
write throttle
Indicates whether write throttling is active.
opensearch_indices_store_size_bytes
storage size
The storage size.
opensearch_indices_search_query_current_number
current queries
The number of active query operations.
opensearch_process_file_descriptors_open_number
number of open files
The number of open file descriptors.
opensearch_threadpool_tasks_number
thread pool tasks
The number of tasks in the thread pool.
opensearch_threadpool_threads_number
number of threads
The number of threads in the thread pool.
opensearch_transport_rx_bytes_count
transport received data
The volume of data received by the transport layer.
opensearch_transport_server_open_number
transport connections
The number of TCP connections on the transport layer.
opensearch_transport_tx_bytes_count
transport sent data
The volume of data sent by the transport layer.
opensearch_jvm_mem_nonheap_used_bytes
off-heap memory
The amount of used off-heap memory for the JVM.
opensearch_process_mem_total_virtual_bytes
memory usage
The total amount of virtual memory used by the process.