bugfix - check for null before the for-each loop

Signed-off-by: Julien Nioche <[email protected]>
apache · Oct 31, 2024 · 928c308 · 928c308
1 parent 1c0e33c
commit 928c308
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/external/warc/src/main/java/org/apache/stormcrawler/warc/MetadataRecordFormat.java b/external/warc/src/main/java/org/apache/stormcrawler/warc/MetadataRecordFormat.java
@@ -68,7 +68,9 @@ public byte[] format(Tuple tuple) {
 
         // get the metadata key / values to save in the WARCs
         for (String key : metadataKeys) {
-            for (String value : metadata.getValues(key)) {
+            final String[] values = metadata.getValues(key);
+            if (values == null || values.length == 0) continue;
+            for (String value : values) {
                 if (StringUtils.isBlank(value)) continue;
                 payload.append(key).append(": ").append(value).append(CRLF);
             }