abhioncbr commented on code in PR #12440: URL: https://github.com/apache/pinot/pull/12440#discussion_r1511264039
########## pinot-spi/src/main/java/org/apache/pinot/spi/env/SegmentMetadataPropertyReader.java: ########## @@ -0,0 +1,82 @@ +/** + * 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.pinot.spi.env; + +import com.google.common.base.Preconditions; +import java.io.Reader; +import java.util.List; +import org.apache.commons.configuration2.PropertiesConfiguration.PropertiesReader; + + +/** + * SegmentMetadataPropertyReader extends the PropertiesReader + * <p> + * Purpose: loads the segment metadata faster + * - by skipping the unescaping of key and + * - parsing the line by splitting based on first occurrence of separator + */ +class SegmentMetadataPropertyReader extends PropertiesReader { + private boolean _skipUnescapePropertyName; + private final String _segmentMetadataVersionHeader; + + public SegmentMetadataPropertyReader(Reader reader, String segmentMetadataVersionHeader) { + super(reader); + _segmentMetadataVersionHeader = segmentMetadataVersionHeader; + } + + @Override + protected void parseProperty(final String line) { + // if newer version of the segment metadata(based on version value in the property configuration header) + // skip the regex based parsing of the line content and splitting the content based on first occurrence of separator + if (!_skipUnescapePropertyName) { Review Comment: - **Explanation**: We override this method to set the `_skipUnescapePropertyName` flag. - **Assumption**: We will not set the version header for the old segment metadata. If we decide to add the header for old segment metadata, in that case we have to compare the version value as well. Header comment is the first content read from the config file, so it will set the flag value if `segment.metadata.version` header is present for the segment. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: commits-unsubscr...@pinot.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@pinot.apache.org For additional commands, e-mail: commits-h...@pinot.apache.org
