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-rw-r--r--src/backend/access/gin/ginxlog.c19
1 files changed, 18 insertions, 1 deletions
diff --git a/src/backend/access/gin/ginxlog.c b/src/backend/access/gin/ginxlog.c
index 291f22ef77f..b86990f3ac7 100644
--- a/src/backend/access/gin/ginxlog.c
+++ b/src/backend/access/gin/ginxlog.c
@@ -531,7 +531,24 @@ ginRedoDeletePage(XLogReaderState *record)
page = BufferGetPage(dbuffer);
Assert(GinPageIsData(page));
GinPageGetOpaque(page)->flags = GIN_DELETED;
- GinPageSetDeleteXid(page, data->deleteXid);
+
+ /*
+ * deleteXid field of ginxlogDeletePage was added during backpatching.
+ * But, non-backpatched instances will continue generate WAL without
+ * this field. We should be able to correctly apply that. We can
+ * distinguish new WAL records by size their data, because
+ * ginxlogDeletePage changes its size on both 32-bit and 64-bit
+ * platforms.
+ */
+ StaticAssertStmt(sizeof(ginxlogDeletePage) !=
+ sizeof(ginxlogDeletePageOld),
+ "ginxlogDeletePage size should be changed "
+ "with addition of deleteXid field");
+ Assert(XLogRecGetDataLen(record) == sizeof(ginxlogDeletePage) ||
+ XLogRecGetDataLen(record) == sizeof(ginxlogDeletePageOld));
+ if (XLogRecGetDataLen(record) == sizeof(ginxlogDeletePage))
+ GinPageSetDeleteXid(page, data->deleteXid);
+
PageSetLSN(page, lsn);
MarkBufferDirty(dbuffer);
}