MySQL instances. When this is not possible, Vitess will use a plan that collects input from multiple sources and merges the results to produce the correct query result. 20 Evaluation Model An execution plan used because the tracking mode depends on a specific source. Since VReplication can have multiple sources, this should be dictated by the source. Current position In GTID mode, the current position is guaranteed shards we have multiple sources of events: one primary or replica tablet for each shard in the provided VGTID. The rate at which the events will be streamed from the underlying sources can vary depending on

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 382 Drop Sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MySQL instances. When this is not possible, Vitess will use a plan that collects input from multiple sources and merges the results to produce the correct query result. Evaluation Model An execution plan consists used because the tracking mode depends on a specific source. Since VReplication can have multiple sources, this should be dictated by the source. 51 Current position In GTID mode, the current position

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 363 Drop Sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MySQL instances. When this is not possible, Vitess will use a plan that collects input from multiple sources and merges the results to produce the correct query result. Evaluation Model An execution plan consists used because the tracking mode depends on a specific source. Since VReplication can have multiple sources, this should be dictated by the source. Current position In GTID mode, the current position is guaranteed

MySQL instances. When this is not possible, Vitess will use a plan that collects input from multiple sources and merges the results to produce the correct query result. Evaluation Model An execution plan consists used because the tracking mode depends on a specific source. Since VReplication can have multiple sources, this should be dictated by the source. Current position In GTID mode, the current position is guaranteed low) it switches over (and stays in) the replication mode. While we may have multiple database sources in a workflow each vstream has just one source and one target. The source is always a vttablet (and

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 302 Drop Sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MySQL instances. When this is not possible, Vitess will use a plan that collects input from multiple sources and merges the results to produce the correct query result. Evaluation Model An execution plan consists replication is retried after a short wait. Each time, the stream searches from the full list of available sources and picks one at random. on_ddl The source specification allows you to specify a value for on_ddl

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228 Drop Sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MySQL instances. When this is not possible, Vitess will use a plan that collects input from multiple sources and merges the results to produce the correct query result. Evaluation Model An execution plan consists replication is retried after a short wait. Each time, the stream searches from the full list of available sources and picks one at random. on_ddl The source specification allows you to specify a value for on_ddl

steps undertaken during the first part of the test, which entailed the manual code audit of the sources of the Vitess software in scope. This is to underline that, in spite of the almost nonexistent findings

made when outlining the core components and the specified threat actors. We used the following sources for the threat modelling: ● Vitessʼs documentation including README files from the Vitess repository

replication is retried after a short wait. Each time, the stream searches from the full list of available sources and picks one at random. on_ddl The source specification allows you to specify a value for on_ddl alert, then the alert system needs to be iterated upon. When an alert fires, you have the following sources of information to perform your investigation: • Alert values • Graphs • Diagnostic URLs • Log files

replication is retried after a short wait. Each time, the stream searches from the full list of available sources and picks one at random. 107 on_ddl The source specification allows you to specify a value for alert, then the alert system needs to be iterated upon. When an alert fires, you have the following sources of information to perform your investigation: • Alert values • Graphs • Diagnostic URLs • Log files