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LevelDB issue 178 fix: cannot resize a level 0 compaction set

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This commit is contained in:
JoelKatz
2013-06-14 10:58:47 -07:00
parent 521e812fc4
commit 5e3cac1808
1 changed files with 13 additions and 8 deletions
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21
src/cpp/leveldb/db/version_set.cc
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@@ -1331,14 +1331,19 @@ Compaction* VersionSet::CompactRange(
}
// Avoid compacting too much in one shot in case the range is large.
const uint64_t limit = MaxFileSizeForLevel(level);
uint64_t total = 0;
for (size_t i = 0; i < inputs.size(); i++) {
uint64_t s = inputs[i]->file_size;
total += s;
if (total >= limit) {
inputs.resize(i + 1);
break;
// But we cannot do this for level-0 since level-0 files can overlap
// and we must not pick one file and drop another older file if the
// two files overlap.
if (level > 0) {
const uint64_t limit = MaxFileSizeForLevel(level);
uint64_t total = 0;
for (size_t i = 0; i < inputs.size(); i++) {
uint64_t s = inputs[i]->file_size;
total += s;
if (total >= limit) {
inputs.resize(i + 1);
break;
}
}
}