anmolanmol1234 commented on code in PR #7817: URL: https://github.com/apache/hadoop/pull/7817#discussion_r2260130542
########## hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/services/AbfsConnectionManager.java: ########## @@ -201,7 +279,69 @@ public void shutdown() { private void logDebug(String message, Object... args) { if (LOG.isDebugEnabled()) { - LOG.debug(message, args); + logDebug(message, args); + } + } + + /** + * Caches extra connections in the {@link KeepAliveCache} to warm it up. + * This method is called during initialization and when the cache is empty. + * + * @param route the HTTP route for which connections are created + * @param numberOfConnections the number of connections to create + */ + private void cacheExtraConnection(final HttpRoute route, final int numberOfConnections) { + if (!isCaching.getAndSet(true)) { + long start = System.currentTimeMillis(); + // Only one thread allowed at a time + ExecutorService executorService = Executors.newFixedThreadPool(Math.min(numberOfConnections, 5)); + + for (int i = 0; i < numberOfConnections; i++) { + executorService.submit(() -> { + try { + HttpClientConnection conn = httpConnectionFactory.create(route, null); + connect(conn, route, connectionTimeout, new AbfsManagedHttpClientContext()); + addConnectionToCache(conn); + } catch (Exception e) { + logDebug("Error creating connection: {}", e.getMessage()); Review Comment: here add a check that if conn != null then disconnect as exception can occur at any stage -- 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: common-issues-unsubscr...@hadoop.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org