diff --git a/HISTORY.md b/HISTORY.md
index 28a0c704a..084764a8b 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -1,4 +1,8 @@
 # Rocksdb Change Log
+## Unreleased
+### Bug Fixes
+* Fixed bug in calls to `IngestExternalFiles()` with files for multiple column families. The bug could have introduced a delay in ingested file keys becoming visible after `IngestExternalFiles()` returned. Furthermore, mutations to ingested file keys while they were invisible could have been dropped (not necessarily immediately).
+
 ## 6.25.2 (2021-10-11)
 ### Bug Fixes
 * Fix `DisableManualCompaction()` to cancel compactions even when they are waiting on automatic compactions to drain due to `CompactRangeOptions::exclusive_manual_compactions == true`.
diff --git a/db/db_impl/db_impl.cc b/db/db_impl/db_impl.cc
index bac5e6c7f..b49b09213 100644
--- a/db/db_impl/db_impl.cc
+++ b/db/db_impl/db_impl.cc
@@ -4679,14 +4679,11 @@ Status DBImpl::IngestExternalFiles(
     if (status.ok()) {
       int consumed_seqno_count =
           ingestion_jobs[0].ConsumedSequenceNumbersCount();
-#ifndef NDEBUG
       for (size_t i = 1; i != num_cfs; ++i) {
-        assert(!!consumed_seqno_count ==
-               !!ingestion_jobs[i].ConsumedSequenceNumbersCount());
-        consumed_seqno_count +=
-            ingestion_jobs[i].ConsumedSequenceNumbersCount();
+        consumed_seqno_count =
+            std::max(consumed_seqno_count,
+                     ingestion_jobs[i].ConsumedSequenceNumbersCount());
       }
-#endif
       if (consumed_seqno_count > 0) {
         const SequenceNumber last_seqno = versions_->LastSequence();
         versions_->SetLastAllocatedSequence(last_seqno + consumed_seqno_count);
diff --git a/db/external_sst_file_ingestion_job.h b/db/external_sst_file_ingestion_job.h
index c669089d9..fdf5d9fcf 100644
--- a/db/external_sst_file_ingestion_job.h
+++ b/db/external_sst_file_ingestion_job.h
@@ -139,7 +139,7 @@ class ExternalSstFileIngestionJob {
                              IngestedFileInfo* file_to_ingest,
                              SuperVersion* sv);
 
-  // Assign `file_to_ingest` the appropriate sequence number and  the lowest
+  // Assign `file_to_ingest` the appropriate sequence number and the lowest
   // possible level that it can be ingested to according to compaction_style.
   // REQUIRES: Mutex held
   Status AssignLevelAndSeqnoForIngestedFile(SuperVersion* sv,
diff --git a/db/external_sst_file_test.cc b/db/external_sst_file_test.cc
index 633a0ddac..9213bb50d 100644
--- a/db/external_sst_file_test.cc
+++ b/db/external_sst_file_test.cc
@@ -2421,6 +2421,12 @@ TEST_P(ExternalSSTFileTest, IngestFilesIntoMultipleColumnFamilies_Success) {
   Options options = CurrentOptions();
   options.env = fault_injection_env.get();
   CreateAndReopenWithCF({"pikachu", "eevee"}, options);
+
+  // Exercise different situations in different column families: two are empty
+  // (so no new sequence number is needed), but at least one overlaps with the
+  // DB and needs to bump the sequence number.
+  ASSERT_OK(db_->Put(WriteOptions(), "foo1", "oldvalue"));
+
   std::vector<ColumnFamilyHandle*> column_families;
   column_families.push_back(handles_[0]);
   column_families.push_back(handles_[1]);