88 lines
2.3 KiB
Plaintext
88 lines
2.3 KiB
Plaintext
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#
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# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#######
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# Advanced Users Only
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######
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# You can do things like replace parts of the shell underbelly.
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# Most of this code is in hadoop-functions.sh.
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#
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#
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# For example, if you want to add compression to the rotation
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# menthod for the .out files that daemons generate, you can do
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# that by redefining the hadoop_rotate_log function by
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# uncommenting this code block:
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#function hadoop_rotate_log
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#{
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# local log=$1;
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# local num=${2:-5};
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#
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# if [[ -f "${log}" ]]; then
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# while [[ ${num} -gt 1 ]]; do
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# #shellcheck disable=SC2086
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# let prev=${num}-1
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# if [[ -f "${log}.${prev}.gz" ]]; then
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# mv "${log}.${prev}.gz" "${log}.${num}.gz"
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# fi
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# num=${prev}
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# done
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# mv "${log}" "${log}.${num}"
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# gzip -9 "${log}.${num}"
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# fi
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#}
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#
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#
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#
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# Another example: finding java
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#
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# By default, Hadoop assumes that $JAVA_HOME is always defined
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# outside of its configuration. Eons ago, Apple standardized
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# on a helper program called java_home to find it for you.
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#
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#function hadoop_java_setup
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#{
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#
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# if [[ -z "${JAVA_HOME}" ]]; then
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# case $HADOOP_OS_TYPE in
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# Darwin*)
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# JAVA_HOME=$(/usr/libexec/java_home)
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# ;;
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# esac
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# fi
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#
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# # Bail if we did not detect it
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# if [[ -z "${JAVA_HOME}" ]]; then
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# echo "ERROR: JAVA_HOME is not set and could not be found." 1>&2
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# exit 1
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# fi
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#
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# if [[ ! -d "${JAVA_HOME}" ]]; then
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# echo "ERROR: JAVA_HOME (${JAVA_HOME}) does not exist." 1>&2
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# exit 1
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# fi
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#
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# JAVA="${JAVA_HOME}/bin/java"
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#
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# if [[ ! -x ${JAVA} ]]; then
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# echo "ERROR: ${JAVA} is not executable." 1>&2
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# exit 1
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# fi
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#}
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