<BUG>}if (null == writerBKCBuilder) {</BUG><CONTEXT>}if (null == readerMetadataStore) {this.readerMetadataStore = new ZKLogSegmentMetadataStore(conf, readerZKC, scheduler);} else {this.readerMetadataStore = readerMetadataStore;<extra_id_0>BKDLConfig bkdlConfig = BKDLConfig.resolveDLConfig(writerZKC, uri);BKDLConfig.propagateConfiguration(bkdlConfig, conf);this.writerBKCBuilder = BookKeeperClientBuilder.newBuilder()</CONTEXT>
this.logSegmentMetadataCache = logSegmentMetadataCache;if (null == writerBKCBuilder) {