PostgreSQL 9.4.3 commit log

commit   : de17fe43fa2d67a9d93bd70979a4744ea98fb076    
  
author   : Tom Lane <[email protected]>    
date     : Mon, 1 Jun 2015 15:05:57 -0400    
  
committer: Tom Lane <[email protected]>    
date     : Mon, 1 Jun 2015 15:05:57 -0400    

commit   : 2491e17c72456616bea428e50599be6d56cbaad4    
  
author   : Tom Lane <[email protected]>    
date     : Mon, 1 Jun 2015 13:27:43 -0400    
  
committer: Tom Lane <[email protected]>    
date     : Mon, 1 Jun 2015 13:27:43 -0400    

Also sneak entries for commits 97ff2a564 et al into the sections for  
the previous releases in the relevant branches.  Those fixes did go out  
in the previous releases, but missed getting documented.  

commit   : 99f50dd720de59872bd842be3ec8eecea2be4b92    
  
author   : Tom Lane <[email protected]>    
date     : Fri, 29 May 2015 17:02:58 -0400    
  
committer: Tom Lane <[email protected]>    
date     : Fri, 29 May 2015 17:02:58 -0400    

The fsync code from the backend essentially assumes that somebody's already  
validated PGDATA, at least to the extent of it being a readable directory.  
That's safe enough for initdb's normal code path too, but "initdb -S"  
doesn't have any other processing at all that touches the target directory.  
To have reasonable error-case behavior, add a pg_check_dir call.  
Per gripe from Peter E.  

commit   : 70a4519b82beee9e7bffb17ae4e6d81bb3ab89d8    
  
author   : Tom Lane <[email protected]>    
date     : Fri, 29 May 2015 15:11:36 -0400    
  
committer: Tom Lane <[email protected]>    
date     : Fri, 29 May 2015 15:11:36 -0400    

The argument that this is a sufficiently-expected case to be silently  
ignored seems pretty thin.  Andres had brought it up back when we were  
still considering that most fsync failures should be hard errors, and it  
probably would be legit not to fail hard for ETXTBSY --- but the same is  
true for EROFS and other cases, which is why we gave up on hard failures.  
ETXTBSY is surely not a normal case, so logging the failure seems fine  
from here.  

commit   : dbde225b144890fb5a40e21f8f624de18ead2f95    
  
author   : Tom Lane <[email protected]>    
date     : Fri, 29 May 2015 13:05:16 -0400    
  
committer: Tom Lane <[email protected]>    
date     : Fri, 29 May 2015 13:05:16 -0400    

Make initdb's version of this logic look as much like the backend's  
as possible.  This is much less critical than in the backend since not  
so many people use "initdb -S", but we want the same corner-case error  
handling in both cases.  
  
Back-patch to 9.3 where initdb -S option was introduced.  Before that,  
initdb only had to deal with freshly-created data directories, wherein  
no failures should be expected.  
  
Abhijit Menon-Sen  

commit   : a3ae3db438db9d0ed66a53264d2f0067d80ae4c9    
  
author   : Tom Lane <[email protected]>    
date     : Thu, 28 May 2015 17:33:03 -0400    
  
committer: Tom Lane <[email protected]>    
date     : Thu, 28 May 2015 17:33:03 -0400    

Commit 2ce439f3379aed857517c8ce207485655000fc8e introduced a rather serious  
regression, namely that if its scan of the data directory came across any  
un-fsync-able files, it would fail and thereby prevent database startup.  
Worse yet, symlinks to such files also caused the problem, which meant that  
crash restart was guaranteed to fail on certain common installations such  
as older Debian.  
  
After discussion, we agreed that (1) failure to start is worse than any  
consequence of not fsync'ing is likely to be, therefore treat all errors  
in this code as nonfatal; (2) we should not chase symlinks other than  
those that are expected to exist, namely pg_xlog/ and tablespace links  
under pg_tblspc/.  The latter restriction avoids possibly fsync'ing a  
much larger part of the filesystem than intended, if the user has left  
random symlinks hanging about in the data directory.  
  
This commit takes care of that and also does some code beautification,  
mainly moving the relevant code into fd.c, which seems a much better place  
for it than xlog.c, and making sure that the conditional compilation for  
the pre_sync_fname pass has something to do with whether pg_flush_data  
works.  
  
I also relocated the call site in xlog.c down a few lines; it seems a  
bit silly to be doing this before ValidateXLOGDirectoryStructure().  
  
The similar logic in initdb.c ought to be made to match this, but that  
change is noncritical and will be dealt with separately.  
  
Back-patch to all active branches, like the prior commit.  
  
Abhijit Menon-Sen and Tom Lane  

commit   : d4a9f5519d300aeae813a872b3c9874a7e02564b    
  
author   : Tom Lane <[email protected]>    
date     : Thu, 28 May 2015 11:24:37 -0400    
  
committer: Tom Lane <[email protected]>    
date     : Thu, 28 May 2015 11:24:37 -0400    

Seems to have been an oversight in the original leakproofness patch.  
Per report and patch from Jeevan Chalke.  
  
In passing, prettify some awkward leakproof-related code in AlterFunction.  

commit   : 269cb4fbcad116d3ec497326f166b6690a6ffbd5    
  
author   : Tom Lane <[email protected]>    
date     : Wed, 27 May 2015 19:14:39 -0400    
  
committer: Tom Lane <[email protected]>    
date     : Wed, 27 May 2015 19:14:39 -0400    

specparse.y and specscanner.l used "string" as a token name.  Now, bison  
likes to define each token name as a macro for the token code it assigns,  
which means those names are basically off-limits for any other use within  
the grammar file or included headers.  So names as generic as "string" are  
dangerous.  This is what was causing the recent failures on protosciurus:  
some versions of Solaris' sys/kstat.h use "string" as a field name.  
With late-model bison we don't see this problem because the token macros  
aren't defined till later (that is why castoroides didn't show the problem  
even though it's on the same machine).  But protosciurus uses bison 1.875  
which defines the token macros up front.  
  
This land mine has been there from day one; we'd have found it sooner  
except that protosciurus wasn't trying to run the isolation tests till  
recently.  
  
To fix, rename the token to "string_literal" which is hopefully less  
likely to collide with names used by system headers.  Back-patch to  
all branches containing the isolation tests.  

commit   : c8c6a693ecb69d9f5f83da14e2501bc49f49612b    
  
author   : Andrew Dunstan <[email protected]>    
date     : Tue, 26 May 2015 22:54:55 -0400    
  
committer: Andrew Dunstan <[email protected]>    
date     : Tue, 26 May 2015 22:54:55 -0400    

This reverts commit 54547bd87f49326d67051254c363e6597d16ffda.  
  
This appears to have been a thinko on my part. I will try to come up  
wioth a better solution.  

commit   : 79f0f7cab81b03e930deea6220e8bbc5b46f392a    
  
author   : Tom Lane <[email protected]>    
date     : Tue, 26 May 2015 22:14:59 -0400    
  
committer: Tom Lane <[email protected]>    
date     : Tue, 26 May 2015 22:14:59 -0400    

According to recent tests, this case now works fine, so there's no reason  
to reject it anymore.  (Even if there are still some OpenBSD platforms  
in the wild where it doesn't work, removing the check won't break any case  
that worked before.)  
  
We can actually remove the entire test that discovers whether libpython  
is threaded, since without the OpenBSD case there's no need to know that  
at all.  
  
Per report from Davin Potts.  Back-patch to all active branches.  

commit   : 10eb60c2dc9461b56cf90cf05032a078eef7243d    
  
author   : Andrew Dunstan <[email protected]>    
date     : Tue, 26 May 2015 11:16:52 -0400    
  
committer: Andrew Dunstan <[email protected]>    
date     : Tue, 26 May 2015 11:16:52 -0400    

Commit 9b74f32cdbff8b9be47fc69164eae552050509ff did this for objects of  
type jbvBinary, but in trying further to simplify some of the new jsonb  
code I discovered that objects of type jbvObject or jbvArray passed as  
WJB_ELEM or WJB_VALUE also caused problems. These too are now added  
component by component.  
  
Backpatch to 9.4.  

commit   : 833c3961d9f22b46c32eeb9c4e73d334864994ed    
  
author   : Alvaro Herrera <[email protected]>    
date     : Mon, 25 May 2015 15:09:05 -0300    
  
committer: Alvaro Herrera <[email protected]>    
date     : Mon, 25 May 2015 15:09:05 -0300    

Multixact truncation is now handled differently, and this file hadn't  
gotten the memo.  
  
Per note from Amit Langote.  I didn't use his patch, though.  
  
Also update the description of infomask bits, which weren't completely up  
to date either.  This commit also propagates b01a4f6838 back to 9.3 and  
9.4, which apparently I failed to do back then.  

commit   : 20bc3548d77a30eeae37e3cc86088fc52059ca4a    
  
author   : Tom Lane <[email protected]>    
date     : Sun, 24 May 2015 13:03:45 -0400    
  
committer: Tom Lane <[email protected]>    
date     : Sun, 24 May 2015 13:03:45 -0400    

The name objectType is widely used as a field name, and it's pure luck that  
this conflict has not caused pgindent to go crazy before.  It messed up  
pg_audit.c pretty good though.  Since pg_shdepend.c doesn't export this  
typedef and only uses it in three places, changing that seems saner than  
changing the field usages.  
  
Back-patch because we're contemplating using the union of all branch  
typedefs for future pgindent runs, so this won't fix anything if it  
stays the same in back branches.  

commit   : 9b74f32cdbff8b9be47fc69164eae552050509ff    
  
author   : Andrew Dunstan <[email protected]>    
date     : Fri, 22 May 2015 10:21:41 -0400    
  
committer: Andrew Dunstan <[email protected]>    
date     : Fri, 22 May 2015 10:21:41 -0400    

pushJsonbValue was accepting jbvBinary objects passed as WJB_ELEM or  
WJB_VALUE data. While this succeeded, when those objects were later  
encountered in attempting to convert the result to Jsonb, errors  
occurred. With this change we ghuarantee that a JSonbValue constructed  
from calls to pushJsonbValue does not contain any jbvBinary objects.  
This cures a problem observed with jsonb_delete.  
  
This means callers of pushJsonbValue no longer need to perform this  
unpacking themselves. A subsequent patch will perform some cleanup in  
that area.  
  
The error was not triggered by any 9.4 code, but this is a publicly  
visible routine, and so the error could be exercised by third party  
code, therefore backpatch to 9.4.  
  
Bug report from Peter Geoghegan, fix by me.  

commit   : 7d0d2b8da1fee13e473495ffdfc7d642b37ebd63    
  
author   : Simon Riggs <[email protected]>    
date     : Tue, 19 May 2015 18:38:41 -0400    
  
committer: Simon Riggs <[email protected]>    
date     : Tue, 19 May 2015 18:38:41 -0400