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Bug#16736929 PAGE_ZIP_DECOMPRESS() FAILS ON EMPTY RECORD

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When a record contains no user data bytes (such as when the PRIMARY
KEY is an empty string and all secondary index fields are NULL or the
empty string), page_zip_decompress() could fail to set the record
heap_no correctly.

page_zip_decompress_node_ptrs(), page_zip_decompress_sec(),
page_zip_decompress_clust(): Set heap_no also at the end of the
compressed data stream.

rb#2448 approved by Jimmy Yang and Inaam Rana
This commit is contained in:
Marko Mäkelä 2013-05-15 22:40:29 +03:00
parent 6147874587
commit 1d3a200bb5
2 changed files with 44 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
storage/innodb_plugin/ChangeLog
View File

@ -1,3 +1,8 @@
2013-05-15 The InnoDB Team
* page/page0zip.c:
Fix Bug#16736929 PAGE_ZIP_DECOMPRESS() FAILS ON EMPTY RECORD
2013-03-12 The InnoDB Team
* include/page0zip.ic, page/page0zip.c:

45
storage/innodb_plugin/page/page0zip.c
View File

@ -2148,8 +2148,19 @@ page_zip_decompress_node_ptrs(
- PAGE_ZIP_START - PAGE_DIR);
switch (inflate(d_stream, Z_SYNC_FLUSH)) {
case Z_STREAM_END:
/* Apparently, n_dense has grown
since the time the page was last compressed. */
if (d_stream->next_out
!= rec - REC_N_NEW_EXTRA_BYTES) {
/* n_dense has grown since the page
was last compressed. */
} else {
/* Skip the REC_N_NEW_EXTRA_BYTES. */
d_stream->next_out = rec;
/* Set heap_no and the status bits. */
mach_write_to_2(rec - REC_NEW_HEAP_NO,
heap_status);
heap_status += 1 << REC_HEAP_NO_SHIFT;
}
goto zlib_done;
case Z_OK:
case Z_BUF_ERROR:
@ -2337,8 +2348,19 @@ page_zip_decompress_sec(
if (UNIV_LIKELY(d_stream->avail_out)) {
switch (inflate(d_stream, Z_SYNC_FLUSH)) {
case Z_STREAM_END:
/* Apparently, n_dense has grown
since the time the page was last compressed. */
if (d_stream->next_out
!= rec - REC_N_NEW_EXTRA_BYTES) {
/* n_dense has grown since the page
was last compressed. */
} else {
/* Skip the REC_N_NEW_EXTRA_BYTES. */
d_stream->next_out = rec;
/* Set heap_no and the status bits. */
mach_write_to_2(rec - REC_NEW_HEAP_NO,
heap_status);
heap_status += 1 << REC_HEAP_NO_SHIFT;
}
goto zlib_done;
case Z_OK:
case Z_BUF_ERROR:
@ -2596,8 +2618,19 @@ page_zip_decompress_clust(
err = inflate(d_stream, Z_SYNC_FLUSH);
switch (err) {
case Z_STREAM_END:
/* Apparently, n_dense has grown
since the time the page was last compressed. */
if (d_stream->next_out
!= rec - REC_N_NEW_EXTRA_BYTES) {
/* n_dense has grown since the page
was last compressed. */
} else {
/* Skip the REC_N_NEW_EXTRA_BYTES. */
d_stream->next_out = rec;
/* Set heap_no and the status bits. */
mach_write_to_2(rec - REC_NEW_HEAP_NO,
heap_status);
heap_status += 1 << REC_HEAP_NO_SHIFT;
}
goto zlib_done;
case Z_OK:
case Z_BUF_ERROR: