public Builder withFilePath(Path filePath) {
      Preconditions.checkNotNull(filePath);
      this.liveFilePath = filePath;
      return this;
    }
Use either this method or {@link #withOutputDir}, but not both.
@param filePath the StoreFile path to write
@return this (for chained invocation)
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/StoreFileWriter.java