[SP-4201][BACKLOG-22072] DET / DataServices not working with Stream L…

…ookup step

 - restored info-sensitive cache keys for previous fields

engine/src/main/java/org/pentaho/di/trans/TransMeta.java

@@ -120,6 +120,7 @@
 import org.w3c.dom.Node;
 import org.w3c.dom.NodeList;
 
+import javax.ws.rs.HEAD;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
@@ -1392,10 +1393,12 @@ public List<StepMeta> findPreviousSteps( StepMeta stepMeta ) {
   public List<StepMeta> findPreviousSteps( StepMeta stepMeta, boolean info ) {
 
 
+
     if ( stepMeta == null ) {
       return new ArrayList<>();
     }
 
+
     String cacheKey = getStepMetaCacheKey( stepMeta, info );
     List<StepMeta> previousSteps = previousStepCache.get( cacheKey );
 
@@ -1570,6 +1573,7 @@ public StepMeta findNextStep( StepMeta stepMeta, int nr ) {
   public StepMeta[] getPrevSteps( StepMeta stepMeta ) {
 
 
+
     List<StepMeta> prevSteps = previousStepCache.get( getStepMetaCacheKey( stepMeta, true ) );
 
 
@@ -6401,6 +6405,7 @@ public NamedClusterEmbedManager getNamedClusterEmbedManager( ) {
   }
 
 
+
   /**
    *
    * @return
@@ -6471,5 +6476,6 @@ private static RowMetaInterface[] cloneRowMetaInterfaces( RowMetaInterface[] inf
     }
     return cloned;
 
+
   }
 }