content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance
   * with the License.  You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.apache.beam.runners.dataflow.worker.streaming;
  
  import org.apache.beam.runners.dataflow.worker.windmill.Windmill;
  
  public final class KeyCommitTooLargeException extends Exception {
  
    public static KeyCommitTooLargeException causedBy(
        String computationId, long byteLimit, Windmill.WorkItemCommitRequest request) {
      StringBuilder message = new StringBuilder();
      message.append("Commit request for stage ");
      message.append(computationId);
      message.append(" and key ");
      message.append(request.getKey().toStringUtf8());
      if (request.getSerializedSize() > 0) {
        message.append(
            " has size "
                + request.getSerializedSize()
                + " which is more than the limit of "
                + byteLimit);
      } else {
        message.append(" is larger than 2GB and cannot be processed");
      }
      message.append(
          ". This may be caused by grouping a very "
              + "large amount of data in a single window without using Combine,"
              + " or by producing a large amount of data from a single input element."
              + " See https://cloud.google.com/dataflow/docs/guides/common-errors#key-commit-too-large-exception.");
      return new KeyCommitTooLargeException(message.toString());
    }
  
    private KeyCommitTooLargeException(String message) {
      super(message);
    }
  }
  