A system, comprising: a processor; and a memory having stored thereon instructions that are executable to cause the system to perform operations comprising: halting a stream processing application; saving a backup checkpoint for the stream processing application; subsequent to the halting, performing an update comprising adding one or more new executable files to the stream processing application; after the update, restarting the stream processing application; subsequent to the restarting, performing a validation on the stream processing application, including: collecting a first plurality of inbound unique event IDs for a first time window after the restart, wherein each of the first plurality of inbound unique event IDs corresponds to a particular database record; subsequent to the end of the first time window, determining whether each of the first plurality of unique event IDs has been collected at a location outbound from the stream processing application; and comparing pre-processing data content to post-processing data content output by the stream processing application; in response to the validation not succeeding, rolling back the stream processing application to the backup checkpoint; and in response to the validation succeeding, determining not to roll back the stream processing application to the backup checkpoint and allowing the stream processing application to operate using the added one or more new executable files. a processor; and a memory having stored thereon instructions that are executable to cause the system to perform operations comprising: halting a stream processing application; saving a backup checkpoint for the stream processing application; subsequent to the halting, performing an update comprising adding one or more new executable files to the stream processing application; after the update, restarting the stream processing application; subsequent to the restarting, performing a validation on the stream processing application, including: collecting a first plurality of inbound unique event IDs for a first time window after the restart, wherein each of the first plurality of inbound unique event IDs corresponds to a particular database record; subsequent to the end of the first time window, determining whether each of the first plurality of unique event IDs has been collected at a location outbound from the stream processing application; and comparing pre-processing data content to post-processing data content output by the stream processing application; in response to the validation not succeeding, rolling back the stream processing application to the backup checkpoint; and in response to the validation succeeding, determining not to roll back the stream processing application to the backup checkpoint and allowing the stream processing application to operate using the added one or more new executable files. halting a stream processing application; saving a backup checkpoint for the stream processing application; subsequent to the halting, performing an update comprising adding one or more new executable files to the stream processing application; after the update, restarting the stream processing application; subsequent to the restarting, performing a validation on the stream processing application, including: collecting a first plurality of inbound unique event IDs for a first time window after the restart, wherein each of the first plurality of inbound unique event IDs corresponds to a particular database record; subsequent to the end of the first time window, determining whether each of the first plurality of unique event IDs has been collected at a location outbound from the stream processing application; and comparing pre-processing data content to post-processing data content output by the stream processing application; collecting a first plurality of inbound unique event IDs for a first time window after the restart, wherein each of the first plurality of inbound unique event IDs corresponds to a particular database record; subsequent to the end of the first time window, determining whether each of the first plurality of unique event IDs has been collected at a location outbound from the stream processing application; and comparing pre-processing data content to post-processing data content output by the stream processing application; in response to the validation not succeeding, rolling back the stream processing application to the backup checkpoint; and in response to the validation succeeding, determining not to roll back the stream processing application to the backup checkpoint and allowing the stream processing application to operate using the added one or more new executable files.