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RocksDB for Erlang

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rocksdb deps rocksdb db compaction_iteration_stats.h
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deps/rocksdb/db/compaction_iteration_stats.h 

//  Copyright (c) 2016-present, Facebook, Inc.  All rights reserved.

//  This source code is licensed under both the GPLv2 (found in the

//  COPYING file in the root directory) and Apache 2.0 License

//  (found in the LICENSE.Apache file in the root directory).



#pragma once



struct CompactionIterationStats {

  // Compaction statistics



  // Doesn't include records skipped because of

  // CompactionFilter::Decision::kRemoveAndSkipUntil.

  int64_t num_record_drop_user = 0;



  int64_t num_record_drop_hidden = 0;

  int64_t num_record_drop_obsolete = 0;

  int64_t num_record_drop_range_del = 0;

  int64_t num_range_del_drop_obsolete = 0;

  // Deletions obsoleted before bottom level due to file gap optimization.

  int64_t num_optimized_del_drop_obsolete = 0;

  uint64_t total_filter_time = 0;



  // Input statistics

  // TODO(noetzli): The stats are incomplete. They are lacking everything

  // consumed by MergeHelper.

  uint64_t num_input_records = 0;

  uint64_t num_input_deletion_records = 0;

  uint64_t num_input_corrupt_records = 0;

  uint64_t total_input_raw_key_bytes = 0;

  uint64_t total_input_raw_value_bytes = 0;



  // Single-Delete diagnostics for exceptional situations

  uint64_t num_single_del_fallthru = 0;

  uint64_t num_single_del_mismatch = 0;

};