epugh commented on code in PR #2381: URL: https://github.com/apache/solr/pull/2381#discussion_r1712640972
########## solr/modules/hdfs/bin/prepare-snapshot-export.sh: ########## @@ -0,0 +1,176 @@ +#!/usr/bin/env 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 -e + +usage() { + echo "This script is to support the specific use case of using Hadoop specific libraries for managing Solr snapshot." + echo "--prepare-snapshot-export <arg> This command will prepare" + echo " copylistings for the specified" + echo " snapshot. This command should only" + echo " be used only if Solr is deployed" + echo " with Hadoop and collection index" + echo " files are stored on a shared" + echo " file-system e.g. HDFS" + echo "--export <arg> This command will create a backup" + echo " for the specified snapshot." +} + +distcp_warning() { + echo "SOLR_USE_DISTCP environment variable is not set. \ + Do you want to use hadoop distcp tool for exporting Solr collection snapshot ?" +} + +use_bin_solr_warning() { + echo "Please use the bin/solr script to execute this command." +} + +parse_options() { + OPTIND=3 + while getopts ":c:d:s:" o ; do + case "${o}" in + d) + destPath=${OPTARG} + ;; + s) + sourcePath=${OPTARG} + ;; + c) + collectionName=${OPTARG} + ;; + *) + echo "Unknown option ${OPTARG}" + usage 1>&2 + exit 1 + ;; + esac + done +} + +prepare_snapshot_export() { + #Make sure to cleanup the temporary files. + scratch=$(mktemp -d -t solrsnaps.XXXXXXXXXX) + function finish { + rm -rf "${scratch}" + } + trap finish EXIT + + if hdfs dfs -test -d "${destPath}" ; then + run_solr_snapshot_tool --prepare-snapshot-export "$@" -t "${scratch}" + + hdfs dfs -mkdir -p "${copyListingDirPath}" > /dev/null + find "${scratch}" -type f -printf "%f\n" | while read shardId; do + echo "Copying the copy-listing for $shardId" + hdfs dfs -copyFromLocal "${scratch}/${shardId}" "${copyListingDirPath}" > /dev/null + done + else + echo "Directory ${destPath} does not exist." + exit 1 + fi +} + +copy_snapshot_files() { + copylisting_dir_path="$1" + + if hdfs dfs -test -d "${copylisting_dir_path}" ; then + for shardId in $(hdfs dfs -stat "%n" "${copylisting_dir_path}/*"); do + oPath="${destPath}/${snapshotName}/snapshot.${shardId}" + echo "Copying the index files for ${shardId} to ${oPath}" + ${distCpCmd} -f "${copylisting_dir_path}/${shardId}" "${oPath}" > /dev/null + done + else + echo "Directory ${copylisting_dir_path} does not exist." + exit 1 + fi +} + +collectionName="" +destPath="" +sourcePath="" +cmd="$1" +snapshotName="$2" +copyListingDirPath="" +distCpCmd="${SOLR_DISTCP_CMD:-hadoop distcp}" +scriptDir=$(dirname "$0") +solrLibPath="${SOLR_LIB_PATH:-${scriptDir}/../../../server/solr-webapp/webapp/WEB-INF/lib/*:${scriptDir}/../../../server/lib/ext/*:${scriptDir}/../lib/*}" +case "${cmd}" in + --create) + use_bin_solr_warning + ;; + --delete) + use_bin_solr_warning + ;; + --list) + use_bin_solr_warning + ;; + --describe) + use_bin_solr_warning + ;; + --prepare-snapshot-export) + : "${SOLR_USE_DISTCP:? $(distcp_warning)}" + + parse_options "$@" + + : "${destPath:? Please specify destination directory using -d option}" + + copyListingDirPath="${destPath}/copylistings" + prepare_snapshot_export "${@:2}" + echo "Done. GoodBye!" + ;; + --export) + if [ -z "${SOLR_USE_DISTCP}" ]; then + echo "Not using the distcp command" + use_bin_solr_warning + echo "Done. GoodBye!" + exit 0 + fi + + parse_options "$@" + + : "${snapshotName:? Please specify the name of the snapshot}" + : "${destPath:? Please specify destination directory using -d option}" + + if [ -n "${collectionName}" ] && [ -n "${sourcePath}" ]; then + echo "The -c and -s options can not be specified together" + exit 1 + fi + + if [ -z "${collectionName}" ] && [ -z "${sourcePath}" ]; then + echo "At least one of options (-c or -s) must be specified" + exit 1 + fi + + if [ -n "${collectionName}" ]; then + copyListingDirPath="${destPath}/${snapshotName}/copylistings" + prepare_snapshot_export "${@:2}" + copy_snapshot_files "${destPath}/${snapshotName}/copylistings" + hdfs dfs -rm -r -f -skipTrash "${destPath}/${snapshotName}/copylistings" > /dev/null + else + copy_snapshot_files "${sourcePath}/copylistings" + echo "Copying the collection meta-data to ${destPath}/${snapshotName}" + ${distCpCmd} "${sourcePath}/${snapshotName}/*" "${destPath}/${snapshotName}/" > /dev/null + fi + + echo "Done. GoodBye!" + ;; + --help) Review Comment: nice catch, yep! -- This is an automated message from the Apache Git Service. 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