nickva opened a new issue #2414: doc_write_failures count is not preserved sometimes URL: https://github.com/apache/couchdb/issues/2414 `doc_writer_failures` statistic is import to preserve as it is the only indicator that some documents might not have replicated to the target. Recently there was a [fix](https://github.com/apache/couchdb/commit/00b28c265d97df675b725cd68897dc371cbd7168 ) to make sure it is preserved across job scheduled job starts and stop. However, if the replication job is completely removed from the scheduler [+] it doesn't get preserved. Luckily enough that value is saved in the checkpoint history so we could recover from there. However it is still not a 100% guaranteed as checkpoint history is limited and the statistics are not accumulated. So we might have to update the checkpoint history format to accumulate this stat. [+] Could happen if it is changed from normal to continuous or vice-versa, the user simply removes and re-creates it, or the cluster is restarted the statistic value is then not preserved.
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