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Posted to issues@spark.apache.org by "Yun Tang (Jira)" <ji...@apache.org> on 2022/02/10 15:21:00 UTC

[jira] [Created] (SPARK-38178) Correct the logic to measure the memory usage of RocksDB

Yun Tang created SPARK-38178:
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             Summary: Correct the logic to measure the memory usage of RocksDB
                 Key: SPARK-38178
                 URL: https://issues.apache.org/jira/browse/SPARK-38178
             Project: Spark
          Issue Type: Bug
          Components: Structured Streaming
    Affects Versions: 3.2.1
            Reporter: Yun Tang


Currently, structed streaming would report the memory usage of RocksDB as state store's metrics. However, it only sums from {{rocksdb.estimate-table-readers-mem}} and {{rocksdb.size-all-mem-tables}}. However, this lacks of the memory usage of block cache. (You can refer to [Memory-usage-in-RocksDB](https://github.com/facebook/rocksdb/wiki/Memory-usage-in-RocksDB) for more details.)

BTW, as the "block-cache-pinned-usage" is included in "block-cache-usage", we don't need to include the pinned usage.



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