> On Oct 5, 2020, at 5:24 PM, Mark Dilger <mark.dilger@enterprisedb.com> wrote:
>
> - This version does not change clog handling, which leaves Andrey's concern unaddressed. Peter also showed some
supportfor (or perhaps just a lack of opposition to) doing more of what Andrey suggests. I may come back to this
issue,depending on time available and further feedback.
Attached is a patch set that includes the clog handling as discussed. The 0001 and 0002 are effectively unchanged
sinceversion 16 posted yesterday, but this now includes 0003 which creates a non-throwing interface to clog, and 0004
whichuses the non-throwing interface from within amcheck's heap checking functions.
I think this is a pretty good sketch for discussion, though I am unsatisfied with the lack of regression test coverage
ofverify_heapam in the presence of clog truncation. I was hoping to have that as part of v17, but since it is taking a
bitlonger than I anticipated, I'll have to come back with that in a later patch.
—
Mark Dilger
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
