HADOOP-16520. Race condition in DDB table init and waiting threads. (#1576). Contributed by Gabor Bota.

Fixes HADOOP-16349. DynamoDBMetadataStore.getVersionMarkerItem() to log at info/warn on retry

Change-Id: Ia83e92b9039ccb780090c99c41b4f71ef7539d35

Author: Gabor Bota

hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/Constants.java

@@ -176,7 +176,7 @@ private Constants() {
 
   // number of times we should retry errors
   public static final String MAX_ERROR_RETRIES = "fs.s3a.attempts.maximum";
-  public static final int DEFAULT_MAX_ERROR_RETRIES = 20;
+  public static final int DEFAULT_MAX_ERROR_RETRIES = 10;
 
   // seconds until we give up trying to establish a connection to s3
   public static final String ESTABLISH_TIMEOUT =