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not split file in compaciton on level 0

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Summary: we should not split file on level 0 in compaction because it will fail the following verification of seqno order on level 0

Test Plan: check with filldeterministic in db_bench

Reviewers: yhchiang, andrewkr

Reviewed By: andrewkr

Subscribers: andrewkr, dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D65193
This commit is contained in:
Aaron Gao 2016-10-18 16:30:34 -07:00
parent 5e0d6b4cc9
commit 52c9808c3a
1 changed files with 3 additions and 2 deletions
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5
db/compaction_job.cc
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@ -854,8 +854,9 @@ void CompactionJob::ProcessKeyValueCompaction(SubcompactionState* sub_compact) {
// during subcompactions (i.e. if output size, estimated by input size, is
// going to be 1.2MB and max_output_file_size = 1MB, prefer to have 0.6MB
// and 0.6MB instead of 1MB and 0.2MB)
if (sub_compact->current_output_file_size >=
sub_compact->compaction->max_output_file_size()) {
if (sub_compact->compaction->output_level() != 0 &&
sub_compact->current_output_file_size >=
sub_compact->compaction->max_output_file_size()) {
const Slice* next_key = nullptr;
if (c_iter->Valid()) {
next_key = &c_iter->key();