tree 74795e262166fc0004069632f72c90c38154c552
parent 8866fa96bca9727d463f7dd8a344ca0d86c61c28
author Suryandaru Triandana <syndtr@gmail.com> 1453814730 +0700
committer Suryandaru Triandana <syndtr@gmail.com> 1453814885 +0700

leveldb: flush memdb only to level-0 (fixes #127)

Pick level other than zero can cause compaction issue with large
bulk insert and delete on strictly incrementing key-space. The
problem is that the small deletion markers trapped at lower level,
while key/value entries keep growing at higher level. Since the
key-space is strictly incrementing it will not overlaps with
higher level, thus maximum possible level is always picked, while
overlapping deletion marker pushed into lower level.