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Commit1459e84

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Don't auto-restart per-database autoprewarm workers.
We should try to prewarm each database only once. Otherwise, ifprewarming fails for some reason, it will just keep retrying in aninfnite loop. This can happen if, for example, the database has beendropped. The existing code was intended to implement the try-oncebehavior, but failed to do so because it neglected to setworker.bgw_restart_time to BGW_NEVER_RESTART.Mithun Cy, per a report from Hans BuschmannDiscussion:http://postgr.es/m/CA+hUKGKpQJCWcgyy3QTC9vdn6uKAR_8r__A-MMm2GYfj45caag@mail.gmail.com
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‎contrib/pg_prewarm/autoprewarm.c

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Original file line numberDiff line numberDiff line change
@@ -840,6 +840,7 @@ apw_start_database_worker(void)
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worker.bgw_flags=
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BGWORKER_SHMEM_ACCESS |BGWORKER_BACKEND_DATABASE_CONNECTION;
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worker.bgw_start_time=BgWorkerStart_ConsistentState;
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worker.bgw_restart_time=BGW_NEVER_RESTART;
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strcpy(worker.bgw_library_name,"pg_prewarm");
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strcpy(worker.bgw_function_name,"autoprewarm_database_main");
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strcpy(worker.bgw_name,"autoprewarm worker");

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