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8ace1f79b5
Summary: add this counter stat to track usage of deletion-dropping optimization. if usage is low, we can delete it to prevent bugs like #2726. Closes https://github.com/facebook/rocksdb/pull/2761 Differential Revision: D5665421 Pulled By: ajkr fbshipit-source-id: 881befa2d199838dac88709e7b376a43d304e3d4
36 lines
1.2 KiB
C
36 lines
1.2 KiB
C
// Copyright (c) 2016-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under both the GPLv2 (found in the
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// COPYING file in the root directory) and Apache 2.0 License
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// (found in the LICENSE.Apache file in the root directory).
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#pragma once
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struct CompactionIterationStats {
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// Compaction statistics
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// Doesn't include records skipped because of
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// CompactionFilter::Decision::kRemoveAndSkipUntil.
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int64_t num_record_drop_user = 0;
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int64_t num_record_drop_hidden = 0;
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int64_t num_record_drop_obsolete = 0;
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int64_t num_record_drop_range_del = 0;
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int64_t num_range_del_drop_obsolete = 0;
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// Deletions obsoleted before bottom level due to file gap optimization.
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int64_t num_optimized_del_drop_obsolete = 0;
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uint64_t total_filter_time = 0;
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// Input statistics
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// TODO(noetzli): The stats are incomplete. They are lacking everything
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// consumed by MergeHelper.
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uint64_t num_input_records = 0;
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uint64_t num_input_deletion_records = 0;
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uint64_t num_input_corrupt_records = 0;
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uint64_t total_input_raw_key_bytes = 0;
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uint64_t total_input_raw_value_bytes = 0;
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// Single-Delete diagnostics for exceptional situations
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uint64_t num_single_del_fallthru = 0;
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uint64_t num_single_del_mismatch = 0;
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};
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