Improve the diagnostics of buffer pool accesses for B-trees,
so that the file names and line numbers of the real calls are shown
instead of the line of the buf_page_get() call in btr_block_get().
btr_page_get(): Replaced with a macro.
btr_block_get_func(): Renamed from btr_block_get(). Add file, line.
btr_block_get(): A macro that passes the __FILE__, __LINE__ to
btr_block_get_func().
dict_truncate_index_tree(): Replace a btr_page_get() call
with btr_block_get(), since we are only latching the page, not accessing it.
columns again
This is follow-up to Bug #54358. Not all occurrences of the bug were fixed.
We need to check all calls to btr_copy_externally_stored_field_prefix_low()
and do the right thing when the pointer to the off-page column is null
(full of zero bytes).
It turns out that only the call to btr_copy_externally_stored_field_prefix()
in row_sel_sec_rec_is_for_blob() needs to be changed.
For fetching complete off-page columns rather than prefixes, the function
btr_rec_copy_externally_stored_field() already checks if the pointer
is null (all-zero). Two of its callers (row_merge_copy_blobs() and
row_sel_fetch_columns()) are never executed as READ COMMITTED and can
rightfully assert that the fetch succeeded. The third caller,
row_sel_store_mysql_rec(), already does the right thing.
The calls in row_upd_ext_fetch() and trx_undo_page_fetch_ext() must
expect that the off-page column exists. Update and rollback are
locking operations, never READ UNCOMMITTED.
row_search_for_mysql(): When a secondary index record might not be
visible in the current transaction's read view and we consult the
clustered index and optionally some undo log records, return the
relevant columns of the clustered index record to MySQL instead of the
secondary index record.
ibuf_insert_to_index_page_low(): New function, refactored from
ibuf_insert_to_index_page().
ibuf_insert_to_index_page(): When we are inserting a record in place
of a delete-marked record and some fields of the record differ, update
that record just like row_ins_sec_index_entry_by_modify() would do.
btr_cur_update_alloc_zip(): Make the function public.
mysql_row_templ_t: Add clust_rec_field_no.
row_sel_store_mysql_rec(), row_sel_push_cache_row_for_mysql(): Add the
flag rec_clust, for returning data at clust_rec_field_no instead of
rec_field_no. Resurrect the debug assertion that the record not be
marked for deletion. (Bug #55626)
[UNIV_DEBUG || UNIV_IBUF_DEBUG] ibuf_debug, buf_page_get_gen(),
buf_flush_page_try():
Implement innodb_change_buffering_debug=1 for evicting pages from the
buffer pool, so that change buffering will be attempted more
frequently.
This is a merge from 5.1/builtin to 5.1/plugin of:
--------------
revision-id: vasil.dimov@oracle.com-20101018104811-nwqhg9vav17kl5s1
committer: Vasil Dimov <vasil.dimov@oracle.com>
timestamp: Mon 2010-10-18 13:48:11 +0300
message:
Fix Bug#57252 disabling innobase_stats_on_metadata disables ANALYZE
In order to fix this bug we need to distinguish whether ha_innobase::info()
has been called from ::analyze() or not. Rename ::info() to ::info_low()
and add a boolean parameter that tells whether the call is from ::analyze()
or not. Create a new simple ::info() that just calls
::info_low(false => not called from analyze). From ::analyze() instead of
::info() call ::info_low(true => called from analyze).
Approved by: Jimmy (rb://487)
--------------
dict_update_statistics_low(): Create bogus statistics for those
indexes that cannot be accessed because of the innodb_force_recovery
setting.
ha_innobase::info(): Calculate statistics for each index, even if
innodb_force_recovery is set. Fill in bogus data for those indexes
that are not accessed because of the innodb_force_recovery setting.
Merge up to sunny.bains@oracle.com-20100625081841-ppulnkjk1qlazh82 .
There are 8 more changesets in mysql-5.1-innodb, but PB2 shows a
failure for a test added in one of them. If that is resolved quickly
then those 8 more changesets will be merged too.
