postgres

Commit Graph

Author	SHA1	Message	Date
Heikki Linnakangas	2076db2aea	Move the backup-block logic from XLogInsert to a new file, xloginsert.c. xlog.c is huge, this makes it a little bit smaller, which is nice. Functions related to putting together the WAL record are in xloginsert.c, and the lower level stuff for managing WAL buffers and such are in xlog.c. Also move the definition of XLogRecord to a separate header file. This causes churn in the #includes of all the files that write WAL records, and redo routines, but it avoids pulling in xlog.h into most places. Reviewed by Michael Paquier, Alvaro Herrera, Andres Freund and Amit Kapila.	11 years ago
Heikki Linnakangas	54685338e3	Move log_newpage and log_newpage_buffer to xlog.c. log_newpage is used by many indexams, in addition to heap, but for historical reasons it's always been part of the heapam rmgr. Starting with 9.3, we have another WAL record type for logging an image of a page, XLOG_FPI. Simplify things by moving log_newpage and log_newpage_buffer to xlog.c, and switch to using the XLOG_FPI record type. Bump the WAL version number because the code to replay the old HEAP_NEWPAGE records is removed.	11 years ago
Bruce Momjian	0a78320057	pgindent run for 9.4 This includes removing tabs after periods in C comments, which was applied to back branches, so this change should not effect backpatching.	11 years ago
Bruce Momjian	7e04792a1c	Update copyright for 2014 Update all files in head, and files COPYRIGHT and legal.sgml in all back branches.	12 years ago
Heikki Linnakangas	9e857436ef	Don't include unused space in LOG_NEWPAGE records. This is the same trick we use when taking a full page image of a buffer passed to XLogInsert.	12 years ago
Tom Lane	24ace4053d	Retry after buffer locking failure during SPGiST index creation. The original coding thought this case was impossible, but it can happen if the bgwriter or checkpointer processes decide to write out an index page while creation is still proceeding, leading to a bogus "unexpected spgdoinsert() failure" error. Problem reported by Jonathan S. Katz. Teodor Sigaev	12 years ago
Tom Lane	e472b92140	Avoid deadlocks during insertion into SP-GiST indexes. SP-GiST's original scheme for avoiding deadlocks during concurrent index insertions doesn't work, as per report from Hailong Li, and there isn't any evident way to make it work completely. We could possibly lock individual inner tuples instead of their whole pages, but preliminary experimentation suggests that the performance penalty would be huge. Instead, if we fail to get a buffer lock while descending the tree, just restart the tree descent altogether. We keep the old tuple positioning rules, though, in hopes of reducing the number of cases where this can happen. Teodor Sigaev, somewhat edited by Tom Lane	12 years ago
Simon Riggs	96ef3b8ff1	Allow I/O reliability checks using 16-bit checksums Checksums are set immediately prior to flush out of shared buffers and checked when pages are read in again. Hint bit setting will require full page write when block is dirtied, which causes various infrastructure changes. Extensive comments, docs and README. WARNING message thrown if checksum fails on non-all zeroes page; ERROR thrown but can be disabled with ignore_checksum_failure = on. Feature enabled by an initdb option, since transition from option off to option on is long and complex and has not yet been implemented. Default is not to use checksums. Checksum used is WAL CRC-32 truncated to 16-bits. Simon Riggs, Jeff Davis, Greg Smith Wide input and assistance from many community members. Thank you.	12 years ago
Simon Riggs	bb7cc2623f	Remove PageSetTLI and rename pd_tli to pd_checksum Remove use of PageSetTLI() from all page manipulation functions and adjust README to indicate change in the way we make changes to pages. Repurpose those bytes into the pd_checksum field and explain how that works in comments about page header. Refactoring ahead of actual feature patch which would make use of the checksum field, arriving later. Jeff Davis, with comments and doc changes by Simon Riggs Direction suggested by Robert Haas; many others providing review comments.	12 years ago
Bruce Momjian	bd61a623ac	Update copyrights for 2013 Fully update git head, and update back branches in ./COPYRIGHT and legal.sgml files.	13 years ago
Alvaro Herrera	e20a90e188	Trim spgist_private.h inclusion It doesn't really need rel.h; relcache.h is enough.	13 years ago
Alvaro Herrera	21c09e99dc	Split heapam_xlog.h from heapam.h The heapam XLog functions are used by other modules, not all of which are interested in the rest of the heapam API. With this, we let them get just the XLog stuff in which they are interested and not pollute them with unrelated includes. Also, since heapam.h no longer requires xlog.h, many files that do include heapam.h no longer get xlog.h automatically, including a few headers. This is useful because heapam.h is getting pulled in by execnodes.h, which is in turn included by a lot of files.	13 years ago
Bruce Momjian	927d61eeff	Run pgindent on 9.2 source tree in preparation for first 9.3 commit-fest.	13 years ago
Tom Lane	c6a11b89e4	Teach SPGiST to store nulls and do whole-index scans. This patch fixes the other major compatibility-breaking limitation of SPGiST, that it didn't store anything for null values of the indexed column, and so could not support whole-index scans or "x IS NULL" tests. The approach is to create a wholly separate search tree for the null entries, and use fixed "allTheSame" insertion and search rules when processing this tree, instead of calling the index opclass methods. This way the opclass methods do not need to worry about dealing with nulls. Catversion bump is for pg_am updates as well as the change in on-disk format of SPGiST indexes; there are some tweaks in SPGiST WAL records as well. Heavily rewritten version of a patch by Oleg Bartunov and Teodor Sigaev. (The original also stored nulls separately, but it reused GIN code to do so; which required undesirable compromises in the on-disk format, and would likely lead to bugs due to the GIN code being required to work in two very different contexts.)	13 years ago
Bruce Momjian	e126958c2e	Update copyright notices for year 2012.	14 years ago
Tom Lane	8daeb5ddd6	Add SP-GiST (space-partitioned GiST) index access method. SP-GiST is comparable to GiST in flexibility, but supports non-balanced partitioned search structures rather than balanced trees. As described at PGCon 2011, this new indexing structure can beat GiST in both index build time and query speed for search problems that it is well matched to. There are a number of areas that could still use improvement, but at this point the code seems committable. Teodor Sigaev and Oleg Bartunov, with considerable revisions by Tom Lane	14 years ago

16 Commits (2076db2aea766c4c828dccc34ae35f614129000d)