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f0deff867a
The main bug here was the following situation: Suppose we set up a completely new master2 as an extra multi-master to an existing slave that already has a different master1 for domain_id=0. When the slave tries to connect to master2, master2 will not have anything that slave requests in domain_id=0, but that is fine as master2 is supposedly meant to serve eg. domain_id=1. (This is MDEV-4485). But suppose that master2 then actually starts sending events from domain_id=0. In this case, the fix for MDEV-4485 was incomplete, and the code would fail to give the error that the position requested by the slave in domain_id=0 was missing from the binlogs of master2. This could lead to lost events or completely wrong replication. The patch for this bug fixes this issue. In addition, it cleans up the code a bit, getting rid of the fake_gtid_hash in the code. And the error message when slave and master have diverged due to alternate future is clarified, as requested in the bug description. |
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| engines | ||
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| heap | ||
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