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*: debugging for reproducing tikv#19906 #436

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34 changes: 34 additions & 0 deletions db/db_impl/db_impl.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -5984,6 +5984,40 @@ Status DBImpl::IngestExternalFiles(
}
if (consumed_seqno_count > 0) {
const SequenceNumber last_seqno = versions_->LastSequence();

ROCKS_LOG_WARN(
immutable_db_options_.info_log,
"[sequence-number-repro] consumed_seqno_count=%d, "
"last_seqno=%" PRIu64 ", sleeping for 10ms before updating "
"VersionSet sequence numbers",
consumed_seqno_count, last_seqno);
std::this_thread::sleep_for(std::chrono::milliseconds(10));

const SequenceNumber target_seqno =
last_seqno + static_cast<SequenceNumber>(consumed_seqno_count);
const SequenceNumber current_allocated =
versions_->LastAllocatedSequence();
const SequenceNumber current_published =
versions_->LastPublishedSequence();
const SequenceNumber current_last = versions_->LastSequence();
const SequenceNumber allocated_rollback =
current_allocated > target_seqno ? current_allocated - target_seqno
: 0;
const SequenceNumber published_rollback =
current_published > target_seqno ? current_published - target_seqno
: 0;
const SequenceNumber last_rollback =
current_last > target_seqno ? current_last - target_seqno : 0;

ROCKS_LOG_WARN(
immutable_db_options_.info_log,
"[sequence-number-repro-after-sleep] target_seqno=%" PRIu64
", current_allocated=%" PRIu64 ", allocated_rollback=%" PRIu64
", current_published=%" PRIu64 ", published_rollback=%" PRIu64
", current_last=%" PRIu64 ", last_rollback=%" PRIu64,
target_seqno, current_allocated, allocated_rollback,
current_published, published_rollback, current_last, last_rollback);

versions_->SetLastAllocatedSequence(last_seqno + consumed_seqno_count);
versions_->SetLastPublishedSequence(last_seqno + consumed_seqno_count);
versions_->SetLastSequence(last_seqno + consumed_seqno_count);
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