Change default ShardIteratorType from LATEST to TRIM_HORIZON

Author: normj

Tools/LambdaTestTool-v2/src/Amazon.Lambda.TestTool/Processes/DynamoDBStreamsEventSource/DynamoDBStreamsEventSourceConfig.cs

@@ -42,7 +42,7 @@ internal class DynamoDBStreamsEventSourceConfig
 
     /// <summary>
     /// The shard iterator type to use when reading from the stream.
-    /// Valid values: LATEST, TRIM_HORIZON. Default is LATEST.
+    /// Valid values: LATEST, TRIM_HORIZON. Default is TRIM_HORIZON.
     /// </summary>
     public string? ShardIteratorType { get; set; }
 

Tools/LambdaTestTool-v2/src/Amazon.Lambda.TestTool/Processes/DynamoDBStreamsEventSource/DynamoDBStreamsEventSourceProcess.cs

@@ -92,7 +92,7 @@ public static DynamoDBStreamsEventSourceProcess Startup(RunCommandSettings setti
                 FunctionName = config.FunctionName ?? LambdaRuntimeApi.DefaultFunctionName,
                 LambdaRuntimeApi = lambdaRuntimeApi,
                 TableName = tableName,
-                ShardIteratorType = config.ShardIteratorType ?? "LATEST",
+                ShardIteratorType = config.ShardIteratorType ?? "TRIM_HORIZON",
                 PollingIntervalMs = config.PollingIntervalMs ?? DefaultPollingIntervalMs
             };