postgres-xc-committers Mailing List for Postgres-XC

A ref change was pushed to the repository containing the project "Postgres-XC: write-scalable synchronous multi-master PostgreSQL cluster".

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       via  646c894d6e5c6a9fc53802f022c3f8cf147f82ed (commit)
      from  8326f6191831f73d8ee5cae845bc29c879f8ffb3 (commit)

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- Log -----------------------------------------------------------------
commit 646c894d6e5c6a9fc53802f022c3f8cf147f82ed
Author: Mason S <masonsharp@mason-sharps-macbook.local>
Date:   Thu May 13 17:44:00 2010 -0400

    Fixed a bug where if many errors occur we run out of on_proc_exit slots.
    
    Moved up the call to be above setting sigjmp

-----------------------------------------------------------------------

Summary of changes:
 src/backend/tcop/postgres.c |   27 ++++++++++++++-------------
 1 files changed, 14 insertions(+), 13 deletions(-)


hooks/post-receive
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Postgres-XC: write-scalable synchronous multi-master PostgreSQL cluster

A ref change was pushed to the repository containing the project "Postgres-XC: write-scalable synchronous multi-master PostgreSQL cluster".

The branch, master has been updated
       via  8326f6191831f73d8ee5cae845bc29c879f8ffb3 (commit)
      from  fd209fa492b16386f6a00b32dd1d9bf1353a172f (commit)

Those revisions listed above that are new to this repository have
not appeared on any other notification email; so we list those
revisions in full, below.

- Log -----------------------------------------------------------------
commit 8326f6191831f73d8ee5cae845bc29c879f8ffb3
Author: Mason S <masonsharp@mason-sharps-macbook.local>
Date:   Thu May 13 14:21:44 2010 -0400

    Added support for basic aggregate handling.
    
    Aggregates with GROUP BY are not supported, nor are expressions of aggregates
    like "2 * COUNT(*)". Such support will be added in the future.
    
    PostgreSQL aggregates have two steps, a transition step, then a finalizer step.
    Postgres-XC introduces a collection step. The Coordinator accepts the results
    from the Data Node after the transition step, combines and applies the
    finalizer step on the Coordinator.
    
    This required extending the pg_aggregate table to handle the collector
    functions with new columns:
    
    aggcollectfn – the collection function. Column type is regproc, nulls are not allowed
    aggcollecttype – the collection data type. Column type is oid, nulls are not allowed
    agginitcollect – initial value for the collection function. Column type is text, nulls are allowed.
    
    Below is the list of aggregate functions supported by Postgres-XC:
    avg
    sum
    max
    min
    count
    var_pop
    var_samp
    variance
    stddev_pop
    stddev_samp
    stddev
    regr_count
    regr_sxx
    regr_syy
    regr_sxy
    regr_avgx
    regr_avgy
    regr_r2
    regr_slope
    regr_intercept
    covar_pop
    covar_samp
    corr
    bool_and
    bool_or
    every
    bit_and
    bit_or
    xmlagg
    
    We are continuing to use blocks of #ifdef PGXC code for XC changes.
    the genbki.sh script in src/backend/catalog was changed so that the
    header files can be processed with or without PGXC defined.
    
    Designed and written by Andrei Martsinchyk, with small modifications by me.

-----------------------------------------------------------------------

Summary of changes:
 src/backend/catalog/genbki.sh        |   19 ++
 src/backend/catalog/pg_aggregate.c   |   73 +++++++-
 src/backend/commands/aggregatecmds.c |   49 +++++
 src/backend/executor/nodeAgg.c       |    5 +
 src/backend/executor/nodeWindowAgg.c |    3 +-
 src/backend/parser/parse_agg.c       |   32 +++-
 src/backend/pgxc/plan/planner.c      |  233 ++++++++++++++++++----
 src/backend/pgxc/pool/combiner.c     |  356 +++++++++++++++++++++++-----------
 src/backend/utils/adt/float.c        |  130 ++++++++++++
 src/backend/utils/adt/numeric.c      |  117 +++++++++++-
 src/backend/utils/adt/timestamp.c    |   62 ++++++-
 src/include/catalog/catversion.h     |    4 +
 src/include/catalog/duplicate_oids   |    2 +-
 src/include/catalog/pg_aggregate.h   |  213 ++++++++++++++++++++
 src/include/catalog/pg_proc.h        |   14 ++
 src/include/catalog/unused_oids      |    2 +-
 src/include/pgxc/combiner.h          |    5 +
 src/include/pgxc/planner.h           |   54 +++++-
 src/include/utils/builtins.h         |   15 ++
 src/include/utils/timestamp.h        |    3 +
 20 files changed, 1227 insertions(+), 164 deletions(-)


hooks/post-receive
-- 
Postgres-XC: write-scalable synchronous multi-master PostgreSQL cluster

A ref change was pushed to the repository containing the project "Postgres-XC: write-scalable synchronous multi-master PostgreSQL cluster".

The branch, master has been updated
       via  fd209fa492b16386f6a00b32dd1d9bf1353a172f (commit)
      from  1dcc0249cc7d58f024192717cefa8c841494e60e (commit)

Those revisions listed above that are new to this repository have
not appeared on any other notification email; so we list those
revisions in full, below.

- Log -----------------------------------------------------------------
commit fd209fa492b16386f6a00b32dd1d9bf1353a172f
Author: Pavan Deolasee <pav...@gm...>
Date:   Wed May 12 19:28:26 2010 -0700

    Fix an assertion failure in the GTM code. We were mistakenly overwriting an
    union member after the recent changes for snapshot grouping.

-----------------------------------------------------------------------

Summary of changes:
 src/gtm/client/fe-protocol.c |    6 +++---
 src/gtm/client/gtm_client.c  |    2 +-
 src/include/gtm/gtm_client.h |   10 +++++-----
 3 files changed, 9 insertions(+), 9 deletions(-)


hooks/post-receive
-- 
Postgres-XC: write-scalable synchronous multi-master PostgreSQL cluster

A ref change was pushed to the repository containing the project "Postgres-XC: write-scalable synchronous multi-master PostgreSQL cluster".

The branch, master has been updated
       via  1dcc0249cc7d58f024192717cefa8c841494e60e (commit)
      from  ae79d556dc119885cc529eeaf8fc81b57eb116b0 (commit)

Those revisions listed above that are new to this repository have
not appeared on any other notification email; so we list those
revisions in full, below.

- Log -----------------------------------------------------------------
commit 1dcc0249cc7d58f024192717cefa8c841494e60e
Author: Pavan Deolasee <pavan@ubuntu.(none)>
Date:   Wed May 12 18:55:34 2010 -0700

    Fix some stylistic issues with the code. Trying to make it more
    consistent in general and with Postgres code in particular

-----------------------------------------------------------------------

Summary of changes:
 src/backend/access/transam/gtm.c    |   16 +++---
 src/backend/catalog/pgxc_class.c    |   14 +++--
 src/backend/pgxc/locator/locator.c  |   17 +++---
 src/backend/pgxc/plan/planner.c     |   49 ++++++--------
 src/backend/pgxc/pool/combiner.c    |    2 +-
 src/backend/pgxc/pool/datanode.c    |  119 ++++++++++++++++-------------------
 src/backend/pgxc/pool/poolcomm.c    |   26 ++++----
 src/backend/pgxc/pool/poolmgr.c     |   73 +++++++++-------------
 src/backend/postmaster/postmaster.c |    2 +-
 src/include/pgxc/locator.h          |   16 +++---
 src/include/pgxc/planner.h          |   15 ++---
 src/include/pgxc/poolcomm.h         |   20 +++---
 src/include/pgxc/poolmgr.h          |   18 +++---
 13 files changed, 178 insertions(+), 209 deletions(-)


hooks/post-receive
-- 
Postgres-XC: write-scalable synchronous multi-master PostgreSQL cluster

A ref change was pushed to the repository containing the project "Postgres-XC: write-scalable synchronous multi-master PostgreSQL cluster".

The branch, master has been updated
       via  ae79d556dc119885cc529eeaf8fc81b57eb116b0 (commit)
      from  ad2e28f5d1de93bd3a9174386b146f89d4330ade (commit)

Those revisions listed above that are new to this repository have
not appeared on any other notification email; so we list those
revisions in full, below.

- Log -----------------------------------------------------------------
commit ae79d556dc119885cc529eeaf8fc81b57eb116b0
Author: Mason S <masonsharp@mason-sharps-macbook.local>
Date:   Wed May 12 21:09:44 2010 -0400

    This is the first of some planned changes to recognize more "Postgres-XC safe"
    queries, before we implement more complex cross-node operations.
    
    This focuses on native pg_catalog based views like pg_settings.
    This is because it used by pgadmin. With the attached patch, pgadmin no
    longer complains about such queries because they are now supported.
    
    The PostgreSQL query rewriter appears to convert the view into a subquery.
    I modified the XC planner to check for pg_catalog table usage in the
    FROM clause (and subqueries thereof).
    
    In addition, pgadmin was sending "SET client_encoding to 'UNICODE'".
    It was being swallowed and proxied by Postgres-XC, but no response was sent
    back because it did not recognize the 'S' message response. I have now
    added support for that, too.
    
    Note that we have planned a whole separate task planned for proper SET
    handling. These commands will now be processed, but the user should not
    assume that these will remain set, due to Postgres-XC pooler.
    Again, we will address this in the future.
    
    With this patch pgadmin runs much more smoothly when connected to Postgres-XC.
    Users can view schema information and issue SQL statements.  There is
    still an error window that pops up when clicking on a table because it
    issues a "SELECT count(*) FROM table", which is not yet supported in
    Postgres-XC. This problem will disappear soon however, as a patch is
    almost ready for basic aggregate support.

-----------------------------------------------------------------------

Summary of changes:
 src/backend/pgxc/plan/planner.c     |  154 ++++++++++++++++++++++++++++-------
 src/backend/pgxc/pool/combiner.c    |   18 ++++
 src/backend/pgxc/pool/datanode.c    |    1 +
 src/backend/utils/cache/lsyscache.c |   29 +++++++
 src/include/pgxc/locator.h          |   10 +++
 src/include/utils/lsyscache.h       |    3 +
 6 files changed, 184 insertions(+), 31 deletions(-)


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Postgres-XC: write-scalable synchronous multi-master PostgreSQL cluster