METRON-2152 Add debug logging for when sensor batchTimeout exceeds the calculated maximum (mmiklavc) closes apache/metron#1437
diff --git a/metron-platform/metron-writer/metron-writer-common/src/main/java/org/apache/metron/writer/BatchTimeoutPolicy.java b/metron-platform/metron-writer/metron-writer-common/src/main/java/org/apache/metron/writer/BatchTimeoutPolicy.java
index 8edd8ff..4c167d5 100644
--- a/metron-platform/metron-writer/metron-writer-common/src/main/java/org/apache/metron/writer/BatchTimeoutPolicy.java
+++ b/metron-platform/metron-writer/metron-writer-common/src/main/java/org/apache/metron/writer/BatchTimeoutPolicy.java
@@ -100,6 +100,7 @@
   protected long getBatchTimeout(String sensorType, WriterConfiguration configurations) {
     int batchTimeoutSecs = configurations.getBatchTimeout(sensorType);
     if (batchTimeoutSecs <= 0 || batchTimeoutSecs > maxBatchTimeout) {
+      LOG.debug("The configured batch timeout '{}' for sensor type '{}' is <=0 or > the maximum allowable batch timeout '{}'. Setting the batch timeout to the maximum allowable.", batchTimeoutSecs, sensorType, maxBatchTimeout);
       batchTimeoutSecs = maxBatchTimeout;
     }
     return TimeUnit.SECONDS.toMillis(batchTimeoutSecs);