Fix czf temp file issue in Traffic Router (#8008)

Co-authored-by: Parthiban, Jagan <[email protected]>

CHANGELOG.md

@@ -21,6 +21,7 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/).
 - [#7933](https://github.com/apache/trafficcontrol/pull/7933), [#8005](https://github.com/apache/trafficcontrol/pull/8005) *Traffic Portal v2*: Update NodeJS version to 18.
 
 ### Fixed
+- [#8008](https://github.com/apache/trafficcontrol/pull/8008) *Traffic Router* Fix czf temp file deletion issue.
 - [#7998](https://github.com/apache/trafficcontrol/pull/7998) *Traffic Portalv2* Fixed (create and update) page titles across every feature
 - [#7984](https://github.com/apache/trafficcontrol/pull/7984) *Traffic Ops* Fixed TO Client cert authentication with respect to returning response cookie.
 - [#7957](https://github.com/apache/trafficcontrol/pull/7957) *Traffic Ops* Fix the incorrect display of delivery services assigned to ORG servers.

traffic_router/core/src/main/java/org/apache/traffic_control/traffic_router/core/loc/AbstractServiceUpdater.java

@@ -376,16 +376,19 @@ protected File downloadDatabase(final String url, final File existingDb) throws
 				eTag = conn.getHeaderField("ETag");
 				if (((HttpURLConnection) conn).getResponseCode() == HttpURLConnection.HTTP_NOT_MODIFIED) {
 					LOGGER.info("[" + getClass().getSimpleName() + "] " + url + " not modified since our existing database's last update time of " + new Date(existingLastModified));
+					outputFile.delete();
 					return existingDb;
 				}
 			} else if (dbURL.getProtocol().equals("file") && conn.getLastModified() > 0 && conn.getLastModified() <= existingLastModified) {
 				LOGGER.info("[" + getClass().getSimpleName() + "] " + url + " not modified since our existing database's last update time of " + new Date(existingLastModified));
+				outputFile.delete();
 				return existingDb;
 			}
 
 			IOUtils.copy(sourceCompressed ? new GZIPInputStream(in) : in, out);
 		}
 
+
 		return outputFile;
 	}