opendj-server-legacy/src/main/java/org/opends/server/backends/pluggable/OnDiskMergeImporter.java
@@ -389,6 +389,7 @@ final int initialThreadCount = maxThreadCount; final Long offheapMemorySize = backendCfg.getImportOffheapMemorySize(); boolean useOffHeap = (offheapMemorySize != null && offheapMemorySize > 0); long memoryAvailable = useOffHeap ? offheapMemorySize.longValue() : calculateAvailableHeapMemoryForBuffersAfterGC(); int threadCount = initialThreadCount;