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  1. 31 5月, 2015 1 次提交
  3. 30 5月, 2015 7 次提交
  5. 29 5月, 2015 3 次提交
    • A
      Support saving history in memtable_list · c8153510
      由 agiardullo 提交于 
      Summary:
For transactions, we are using the memtables to validate that there are no write conflicts.  But after flushing, we don't have any memtables, and transactions could fail to commit.  So we want to someone keep around some extra history to use for conflict checking.  In addition, we want to provide a way to increase the size of this history if too many transactions fail to commit.

After chatting with people, it seems like everyone prefers just using Memtables to store this history (instead of a separate history structure).  It seems like the best place for this is abstracted inside the memtable_list.  I decide to create a separate list in MemtableListVersion as using the same list complicated the flush/installalflushresults logic too much.

This diff adds a new parameter to control how much memtable history to keep around after flushing.  However, it sounds like people aren't too fond of adding new parameters.  So I am making the default size of flushed+not-flushed memtables be set to max_write_buffers.  This should not change the maximum amount of memory used, but make it more likely we're using closer the the limit.  (We are now postponing deleting flushed memtables until the max_write_buffer limit is reached).  So while we might use more memory on average, we are still obeying the limit set (and you could argue it's better to go ahead and use up memory now instead of waiting for a write stall to happen to test this limit).

However, if people are opposed to this default behavior, we can easily set it to 0 and require this parameter be set in order to use transactions.

Test Plan: Added a xfunc test to play around with setting different values of this parameter in all tests.  Added testing in memtablelist_test and planning on adding more testing here.

Reviewers: sdong, rven, igor

Reviewed By: igor

Subscribers: dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D37443
      c8153510
    • Y
      Rename EventLoggerHelpers EventHelpers · ec4ff4e9
      由 Yueh-Hsuan Chiang 提交于 
      Summary:
Rename EventLoggerHelpers EventHelpers, as it's going to include
all event-related helper functions instead of EventLogger only stuffs.

Test Plan: make

Reviewers: sdong, rven, anthony

Reviewed By: anthony

Subscribers: dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D39093
      ec4ff4e9
    • Y
      [API Change] Move listeners from ColumnFamilyOptions to DBOptions · 672dda9b
      由 Yueh-Hsuan Chiang 提交于 
      Summary: Move listeners from ColumnFamilyOptions to DBOptions

Test Plan:
listener_test
compact_files_test

Reviewers: rven, anthony, sdong

Reviewed By: sdong

Subscribers: dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D39087
      672dda9b
  7. 27 5月, 2015 4 次提交
  9. 23 5月, 2015 12 次提交
  11. 22 5月, 2015 6 次提交
  13. 21 5月, 2015 1 次提交
  15. 20 5月, 2015 6 次提交