public void setAction(String action) {
        this.action = action;
    }
<p>
Specifies what action to take when writing to a table with preexisting data. Valid values: <code> append</code>,
<code>merge</code>, <code>truncate</code>, <code>drop</code>.
</p>

@param action
       Specifies what action to take when writing to a table with preexisting data. Valid values:
       <code> append</code>, <code>merge</code>, <code>truncate</code>, <code>drop</code>.
aws-java-sdk-glue/src/main/java/com/amazonaws/services/glue/model/SnowflakeNodeData.java