| #!/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. |
| ################################################################################ |
| # |
| # This script follows the pattern described in the docker best practices here: |
| # https://docs.docker.com/develop/develop-images/dockerfile_best-practices/#entrypoint |
| ################################################################################ |
| |
| set -e |
| set -o pipefail |
| |
| function print_help { |
| echo "Supported commands:" |
| echo " impala - Start a single node, Kudu only, Impala cluster" |
| echo " impala-shell - Start the Impala shell CLI" |
| echo " help - print useful information and exit" |
| echo "" |
| echo "Other commands can be specified to run shell commands." |
| echo "" |
| echo "Environment variables:" |
| echo "KUDU_MASTERS:" |
| echo " Defines the kudu-master configured master addresses." |
| echo " Defaults to kudu-master-1:7051,kudu-master-2:7151,kudu-master-3:7251" |
| } |
| |
| # Define the default environment variables. |
| KUDU_MASTERS=${KUDU_MASTERS:="kudu-master-1:7051,kudu-master-2:7151,kudu-master-3:7251"} |
| |
| DATA_DIR="/var/lib/impala" |
| LOG_DIR="$DATA_DIR/logs" |
| |
| export JAVA_HOME=$(which javac | xargs readlink -f | sed "s:/bin/javac::") |
| |
| function start_hive_metastore() { |
| # If the derby files do not existm initialize the schema. |
| if [ ! -d "${DATA_DIR}/metastore/metastore_db" ]; then |
| schematool -dbType derby -initSchema |
| fi |
| # Starth the Hive Metastore. |
| hive --service metastore & |
| } |
| |
| function start_statestored() { |
| daemon_entrypoint.sh statestored -log_dir=${DATA_DIR}/logs & |
| } |
| |
| function start_catalogd() { |
| daemon_entrypoint.sh catalogd -log_dir=${DATA_DIR}/logs \ |
| -abort_on_config_error=false -catalog_topic_mode=minimal \ |
| -hms_event_polling_interval_s=0 -invalidate_tables_on_memory_pressure=true & |
| } |
| |
| function start_impalad() { |
| daemon_entrypoint.sh impalad -log_dir=${DATA_DIR}/logs \ |
| -abort_on_config_error=false -mem_limit_includes_jvm=true \ |
| -use_local_catalog=true -rpc_use_loopback=true \ |
| -kudu_master_hosts=${KUDU_MASTERS} & |
| } |
| |
| # If no arguments are passed, print the help. |
| if [[ -z "$1" ]]; then |
| print_help |
| exit 1 |
| fi |
| |
| # Note: we use "master" and "tserver" here so the kudu-master and kudu-tserver |
| # binaries can be manually invoked if needed. |
| if [[ "$1" == "impala" ]]; then |
| mkdir -p $DATA_DIR |
| mkdir -p $LOG_DIR |
| start_hive_metastore |
| start_statestored |
| start_catalogd |
| start_impalad |
| tail -F ${LOG_DIR}/impalad.INFO |
| elif [[ "$1" == "help" ]]; then |
| print_help |
| exit 0 |
| fi |
| |
| # Support calling anything else in the container. |
| exec "$@" |
| |
| } |