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  1. 14 4月, 2017 1 次提交
    • A
      change use_direct_writes to use_direct_io_for_flush_and_compaction · 44fa8ece
      由 Aaron Gao 提交于 
      Summary:
Replace Options::use_direct_writes with Options::use_direct_io_for_flush_and_compaction
Now if Options::use_direct_io_for_flush_and_compaction = true, we will enable direct io for both reads and writes for flush and compaction job. Whereas Options::use_direct_reads controls user reads like iterator and Get().
Closes https://github.com/facebook/rocksdb/pull/2117

Differential Revision: D4860912

Pulled By: lightmark

fbshipit-source-id: d93575a8a5e780cf7e40797287edc425ee648c19
      44fa8ece
  3. 13 4月, 2017 1 次提交
  5. 06 4月, 2017 2 次提交
  7. 05 4月, 2017 1 次提交
    • A
      Level-based L0->L0 compaction · d659faad
      由 Andrew Kryczka 提交于 
      Summary:
Level-based L0->L0 compaction operates on spans of files that aren't currently being compacted. It reduces the number of L0 files, thus making write stall conditions harder to reach.

- L0->L0 is triggered when base level is unavailable due to pending compactions
- L0->L0 always outputs one file of at most `max_level0_burst_file_size` bytes.
- Subcompactions are disabled for L0->L0 since we want to output one file.
- Input files are chosen as the longest span of available files that will fit within the size limit. This minimizes number of files in L0.
Closes https://github.com/facebook/rocksdb/pull/2027

Differential Revision: D4760318

Pulled By: ajkr

fbshipit-source-id: 9d07183
      d659faad
  9. 04 4月, 2017 1 次提交
  11. 31 3月, 2017 1 次提交
    • S
      Option to fail a request as incomplete when skipping too many internal keys · c6d04f2e
      由 Sagar Vemuri 提交于 
      Summary:
Operations like Seek/Next/Prev sometimes take too long to complete when there are many internal keys to be skipped. Adding an option, max_skippable_internal_keys -- which could be used to set a threshold for the maximum number of keys that can be skipped, will help to address these cases where it is much better to fail a request (as incomplete) than to wait for a considerable time for the request to complete.

This feature -- to fail an iterator seek request as incomplete, is disabled by default when max_skippable_internal_keys = 0. It is enabled only when max_skippable_internal_keys > 0.

This feature is based on the discussion mentioned in the PR https://github.com/facebook/rocksdb/pull/1084.
Closes https://github.com/facebook/rocksdb/pull/2000

Differential Revision: D4753223

Pulled By: sagar0

fbshipit-source-id: 1c973f7
      c6d04f2e
  13. 29 3月, 2017 1 次提交
  15. 23 3月, 2017 1 次提交
  17. 21 3月, 2017 1 次提交
  19. 14 3月, 2017 1 次提交
  21. 10 3月, 2017 1 次提交
  23. 24 2月, 2017 2 次提交
  25. 22 2月, 2017 1 次提交
  27. 18 2月, 2017 2 次提交
  29. 14 2月, 2017 1 次提交
    • S
      Remove disableDataSync option · eb912a92
      由 Sagar Vemuri 提交于 
      Summary:
Remove disableDataSync, and another similarly named disable_data_sync options.
This is being done to simplify options, and also because the performance gains of this feature can be achieved by other methods.
Closes https://github.com/facebook/rocksdb/pull/1859

Differential Revision: D4541292

Pulled By: sagar0

fbshipit-source-id: 5b3a6ca
      eb912a92
  31. 11 2月, 2017 1 次提交
  33. 09 2月, 2017 1 次提交
  35. 07 2月, 2017 1 次提交
  37. 02 2月, 2017 1 次提交
  39. 27 1月, 2017 1 次提交
  41. 21 1月, 2017 1 次提交
  43. 29 12月, 2016 2 次提交
  45. 13 12月, 2016 1 次提交
  47. 07 12月, 2016 1 次提交
  49. 06 12月, 2016 3 次提交
  51. 02 12月, 2016 1 次提交
  53. 01 12月, 2016 1 次提交
    • M
      Support for range skips in compaction filter · 247d0979
      由 Mike Kolupaev 提交于 
      Summary:
This adds the ability for compaction filter to say "drop this key-value, and also drop everything up to key x". This will cause the compaction to seek input iterator to x, without reading the data. This can make compaction much faster when large consecutive chunks of data are filtered out. See the changes in include/rocksdb/compaction_filter.h for the new API.

Along the way this diff also adds ability for compaction filter changing merge operands, similar to how it can change values; we're not going to use this feature, it just seemed easier and cleaner to implement it than to document that it's not implemented :)

The diff is not as big as it may seem, about half of the lines are a test.
Closes https://github.com/facebook/rocksdb/pull/1599

Differential Revision: D4252092

Pulled By: al13n321

fbshipit-source-id: 41e1e48
      247d0979
  55. 24 11月, 2016 1 次提交
    • S
      Improve Write Stalling System · cd7c4143
      由 Siying Dong 提交于 
      Summary:
Current write stalling system has the problem of lacking of positive feedback if the restricted rate is already too low. Users sometimes stack in very low slowdown value. With the diff, we add a positive feedback (increasing the slowdown value) if we recover from slowdown state back to normal. To avoid the positive feedback to keep the slowdown value to be to high, we add issue a negative feedback every time we are close to the stop condition. Experiments show it is easier to reach a relative balance than before.

Also increase level0_stop_writes_trigger default from 24 to 32. Since level0_slowdown_writes_trigger default is 20, stop trigger 24 only gives four files as the buffer time to slowdown writes. In order to avoid stop in four files while 20 files have been accumulated, the slowdown value must be very low, which is amost the same as stop. It also doesn't give enough time for the slowdown value to converge. Increase it to 32 will smooth out the system.
Closes https://github.com/facebook/rocksdb/pull/1562

Differential Revision: D4218519

Pulled By: siying

fbshipit-source-id: 95e4088
      cd7c4143
  57. 18 11月, 2016 1 次提交
  59. 17 11月, 2016 4 次提交
  61. 16 11月, 2016 1 次提交