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Signed-off-by: Ben Pfaff <blp@feldera.com>
Signed-off-by: Ben Pfaff <blp@feldera.com>
…ihost. When a single pipeline restarts in a multihost pipeline, the coordinator must be able to detect that and to restart the remaining pipelines. This commit allows for that, first by reporting the incarnation UUID in /coordination/status messages (which allows the coordinator to detect the initial incarnation UUID and then, later, changes to it) and by implementing /coordination/restart, which restarts a pipeline process (in cooperation with a wrapper). Signed-off-by: Ben Pfaff <blp@feldera.com>
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This PR introduces features into the pipeline that allow recovery from failures in a multihost pipeline.
This PR breaks old multihost pipelines, but there probably aren't any.