DomGarguilo commented on a change in pull request #2116:
URL: https://github.com/apache/accumulo/pull/2116#discussion_r638770606



##########
File path: 
core/src/main/java/org/apache/accumulo/core/client/ConditionalWriterConfig.java
##########
@@ -175,4 +190,32 @@ public String getClassLoaderContext() {
     return this.classLoaderContext;
   }
 
+  private static <T> T merge(T o1, T o2) {
+    if (o1 != null)
+      return o1;
+    return o2;
+  }
+
+  /**
+   * Merge this ConditionalWriterConfig with another. If config is set in 
both, preference will be
+   * given to this config.
+   *
+   * @param other
+   *          Another ConditionalWriterConfig
+   * @return Merged ConditionalWriterConfig
+   * @since 2.0.0
+   */
+  public ConditionalWriterConfig merge(ConditionalWriterConfig other) {
+    ConditionalWriterConfig result = new ConditionalWriterConfig();
+    result.timeout = merge(this.timeout, other.timeout);
+    result.maxWriteThreads = merge(this.maxWriteThreads, 
other.maxWriteThreads);
+    result.auths = merge(this.auths, other.auths);

Review comment:
       > would it be possible to make the auths follow the pattern around the 
durability field?
   
   Do you mean initializing it as null similar to how we did with durability so 
it can be treated like the rest?




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