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Correct obsolete amcheck comments.

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Oversight in commit dd299df8.
This commit is contained in:
Peter Geoghegan 2019-06-24 10:31:58 -07:00
parent f31111bbe8
commit b00326df7a
1 changed files with 12 additions and 10 deletions
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22
contrib/amcheck/verify_nbtree.c
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@ -798,23 +798,25 @@ nextpage:
* target page:
*
* - That every "real" data item is less than or equal to the high key, which
* is an upper bound on the items on the pages (where there is a high key at
* all -- pages that are rightmost lack one).
* is an upper bound on the items on the page. Data items should be
* strictly less than the high key when the page is an internal page.
*
* - That within the page, every "real" item is less than or equal to the item
* immediately to its right, if any (i.e., that the items are in order within
* the page, so that the binary searches performed by index scans are sane).
* - That within the page, every data item is strictly less than the item
* immediately to its right, if any (i.e., that the items are in order
* within the page, so that the binary searches performed by index scans are
* sane).
*
* - That the last item stored on the page is less than or equal to the first
* "real" data item on the page to the right (if such a first item is
* - That the last data item stored on the page is strictly less than the
* first data item on the page to the right (when such a first item is
* available).
*
* - That tuples report that they have the expected number of attributes.
* INCLUDE index pivot tuples should not contain non-key attributes.
* - Various checks on the structure of tuples themselves. For example, check
* that non-pivot tuples have no truncated attributes.
*
* Furthermore, when state passed shows ShareLock held, function also checks:
*
* - That all child pages respect downlinks lower bound.
* - That all child pages respect strict lower bound from parent's pivot
* tuple.
*
* - That downlink to block was encountered in parent where that's expected.
* (Limited to heapallindexed readonly callers.)