public Mutation setTTL(long ttl) {
    setAttribute(OP_ATTRIBUTE_TTL, Bytes.toBytes(ttl));
    return this;
  }
Set the TTL desired for the result of the mutation, in milliseconds.
@param ttl the TTL desired for the result of the mutation, in milliseconds
hbase-client/src/main/java/org/apache/hadoop/hbase/client/Mutation.java