#!/bin/bash
#
# 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.

set -euo pipefail
trap 'echo Error in $0 at line $LINENO: $(cd "'$PWD'" && awk "NR == $LINENO" $0)' ERR

if [[ $# -eq 1 && "$1" == -format ]]; then
  SHOULD_FORMAT=true
elif [[ $# -ne 0 ]]; then
  echo "Usage: $0 [-format]"
  echo "[-format] : Format the mini-dfs cluster before starting"
  exit 1
else
  SHOULD_FORMAT=false
fi

# Kill and clean data for a clean start.
$IMPALA_HOME/testdata/bin/kill-mini-dfs.sh

if $SHOULD_FORMAT; then
  $IMPALA_HOME/testdata/cluster/admin delete_data
fi

set +e
$IMPALA_HOME/testdata/cluster/admin start_cluster
if [[ $? != 0 ]]; then
  # Don't issue Java version warning when not running Hadoop 3.
  [[ $IMPALA_MINICLUSTER_PROFILE != 3 ]] && exit 1

  # Only issue Java version warning when running Java 7.
  $JAVA -version 2>&1 | grep -q 'java version "1.7' || exit 1

  cat << EOF

Start of the minicluster failed. If the error looks similar to
"Unsupported major.minor version 52.0", make sure you are running at least Java 8.
Your JAVA binary currently points to $JAVA and reports the following version:

EOF
  $JAVA -version
  echo
  exit 1
fi