Implement a --fail-fast option. #222
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This option allows pgcopydb to abort as soon as an error happens in one of the sub-processes. For this, a TERM signal is sent to the process group. The option can also be set from the environment variable PGCOPYDB_FAIL_FAST. In passing, improve the sequence setting code for error management. As soon as a sequence reset operation has failed, the Postgres transaction is broken. Use savepoints to allow the error management code to continue then.
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This option allows pgcopydb to abort as soon as an error happens in one of the sub-processes. For this, a TERM signal is sent to the process group. The option can also be set from the environment variable PGCOPYDB_FAIL_FAST.
In passing, improve the sequence setting code for error management. As soon as a sequence reset operation has failed, the Postgres transaction is broken. Use savepoints to allow the error management code to continue then.