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Print info message about files need compaction for debuging purpose 

Summary:
When there are files marked for compaction after compactions, print extra messages to help debugging. Example:

2015/06/08-23:12:55.212855 7ff5013ff700 [default] [JOB 121] Generated table #75: 54 keys, 4807 bytes (need compaction)

2015/06/08-23:12:55.556194 7ff5013ff700 (Original Log Time 2015/06/08-23:12:55.556160) [default] compacted to: base level 1 max bytes base
10240 files[0 1 9 32 12 0 0 0] max score 0.96 (2 files need compaction), MB/sec: 0.0 rd, 0.1 wr, level 2, files in(1, 3) out(5) MB in(0.0,
0.0) out(0.0), read-write-amplify(11.3) write-amplify(5.7) OK, records in: 40, records dropped: 0

Test Plan:
Run test and see LOG files.

valgrind test DBTest.TablePropertiesNeedCompactTest

Reviewers: rven, yhchiang, kradhakrishnan, IslamAbdelRahman, igor

Reviewed By: igor

Subscribers: yoshinorim, maykov, leveldb, dhruba

Differential Revision: https://reviews.facebook.net/D39771
This commit is contained in:
sdong 2015-06-08 23:14:13 -07:00
parent 406a5682eb
commit 75d7075a8a
3 changed files with 18 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
db/compaction_job.cc
View File

@ -1067,9 +1067,11 @@ Status CompactionJob::FinishCompactionOutputFile(Iterator* input) {
info.job_id = job_id_;
Log(InfoLogLevel::INFO_LEVEL, db_options_.info_log,
"[%s] [JOB %d] Generated table #%" PRIu64 ": %" PRIu64
" keys, %" PRIu64 " bytes",
" keys, %" PRIu64 " bytes%s",
cfd->GetName().c_str(), job_id_, output_number, current_entries,
current_bytes);
current_bytes,
compact_->current_output()->need_compaction ? " (need compaction)"
: "");
EventHelpers::LogAndNotifyTableFileCreation(
event_logger_, cfd->ioptions()->listeners, fd, info);
}

7
db/flush_job.cc
View File

@ -244,9 +244,12 @@ Status FlushJob::WriteLevel0Table(const autovector<MemTable*>& mems,
LogFlush(db_options_.info_log);
}
Log(InfoLogLevel::INFO_LEVEL, db_options_.info_log,
"[%s] [JOB %d] Level-0 flush table #%" PRIu64 ": %" PRIu64 " bytes %s",
"[%s] [JOB %d] Level-0 flush table #%" PRIu64 ": %" PRIu64
" bytes %s"
"%s",
cfd_->GetName().c_str(), job_context_->job_id, meta.fd.GetNumber(),
meta.fd.GetFileSize(), s.ToString().c_str());
meta.fd.GetFileSize(), s.ToString().c_str(),
meta.marked_for_compaction ? " (needs compaction)" : "");
// output to event logger
if (s.ok()) {

11
db/version_set.cc
View File

@ -1551,8 +1551,15 @@ const char* VersionStorageInfo::LevelSummary(
// overwrite the last space
--len;
}
snprintf(scratch->buffer + len, sizeof(scratch->buffer) - len,
"] max score %.2f", compaction_score_[0]);
len += snprintf(scratch->buffer + len, sizeof(scratch->buffer) - len,
"] max score %.2f", compaction_score_[0]);
if (!files_marked_for_compaction_.empty()) {
snprintf(scratch->buffer + len, sizeof(scratch->buffer) - len,
" (%zu files need compaction)",
files_marked_for_compaction_.size());
}
return scratch->buffer;
}