[BUGS] [BUG] pg9.4.10 Logical decoding did not get the correct oldtuplelen

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Тема [BUGS] [BUG] pg9.4.10 Logical decoding did not get the correct oldtuplelen
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Msg-id tencent_5B4204547B0BB8C05F9B1D99@qq.com
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Ответы Re: [BUGS] [BUG] pg9.4.10 Logical decoding did not get the correct oldtuplelen  (Michael Paquier <michael.paquier@gmail.com>)
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hi team:

I found a postgresql 9.4.10 Logical decoding problem
heapam.c:6976 xlog store incorrect oldtuplen when tuplelen is greater than the value field of uint16.

a uint32 variable is assigned to uint16

The structure that holds the oldkey length is:
typedef struct xl_heap_header_len
{
uint16 t_len;
xl_heap_header header;
} xl_heap_header_len;

The problem will lead to logic decoding failure when oldtuplene > 65535 and relreplident = FULL.
The table that triggers the problem is usually relreplident = FULL.
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