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Bruno Cadonna updated KAFKA-18495: ---------------------------------- Fix Version/s: 5.0.0 > Remove Invalid 'numberOfOpenFiles' Metric from RocksDB State Store > ------------------------------------------------------------------- > > Key: KAFKA-18495 > URL: https://issues.apache.org/jira/browse/KAFKA-18495 > Project: Kafka > Issue Type: Sub-task > Components: streams > Reporter: Swikar Patel > Assignee: Swikar Patel > Priority: Major > Fix For: 5.0.0 > > > The `numberOfOpenFiles` metric in the Kafka Streams RocksDB state store > implementation is currently invalid and should be removed. > This metric was intended to report the approximate number of open files in > the RocksDB instance. It was previously calculated using the RocksDB internal > metric `NO_FILE_CLOSES`, which was removed in RocksDB version 9.7.3. Due to > this change, the `numberOfOpenFiles` metric no longer provides accurate > information. The current workaround is to have it always return -1, which is > misleading. > The `numberOfOpenFiles` metric is: Invalid It does not reflect the actual > number of open files in RocksDB. This misleading and returning -1 can confuse > users and monitoring systems and unnecessary it provides no useful > information in its current state. > h4. Proposed Solution > This Jira issue is to implement the changes proposed in [KIP-1125: Remove > Invalid 'numberOfOpenFiles' Metric from RocksDB State > Store|https://cwiki.apache.org/confluence/display/KAFKA/KIP-1125%3A+Remove+Invalid+%27numberOfOpenFiles%27+Metric+from+RocksDB+State+Store]. > The solution is to completely remove the `opennumberfiles` metric, including: > * Removing the related code in `RocksDBMetricsRecorder` > (`numberOfOpenFilesSensor`, recording logic). > * Removing the `numberOfOpenFilesSensor` method in `RocksDBMetrics` > * Updating the Kafka Streams documentation to reflect the metric's removal. -- This message was sent by Atlassian Jira (v8.20.10#820010)