From e7840de9f3db1a5eddedfecbbbc1ff72a4c2631a Mon Sep 17 00:00:00 2001 From: cmumford Date: Fri, 27 Apr 2018 09:14:32 -0700 Subject: [PATCH] Fix documentation for log file growth. This fixes #546 reported on GitHub. ------------- Created by MOE: https://github.com/google/moe MOE_MIGRATED_REVID=194549692 --- doc/impl.md | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/doc/impl.md b/doc/impl.md index 6e6b2ab..cacabb9 100644 --- a/doc/impl.md +++ b/doc/impl.md @@ -65,12 +65,14 @@ Other files used for miscellaneous purposes may also be present (LOCK, *.dbtmp). ## Level 0 When the log file grows above a certain size (4MB by default): -Create a brand new memtable and log file and direct future updates here +Create a brand new memtable and log file and direct future updates here. + In the background: -Write the contents of the previous memtable to an sstable -Discard the memtable -Delete the old log file and the old memtable -Add the new sstable to the young (level-0) level. + +1. Write the contents of the previous memtable to an sstable. +2. Discard the memtable. +3. Delete the old log file and the old memtable. +4. Add the new sstable to the young (level-0) level. ## Compactions