Re: PATCH: logical_work_mem and logical streaming of large in-progress transactions
Tomas Vondra <tomas.vondra@2ndquadrant.com>
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API reference →
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Tighten the concurrent abort check during decoding.
- 2ce353fc1902 14.0 landed
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Improve hash_create()'s API for some added robustness.
- b3817f5f7746 14.0 landed
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Use HASH_BLOBS for xidhash.
- a1b8aa1e4eec 14.0 landed
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Fix initialization of RelationSyncEntry for streaming transactions.
- 69bd60672af6 14.0 landed
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Remove unused function declaration in logicalproto.h.
- ddd5f6d2609b 14.0 landed
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Add additional tests to test streaming of in-progress transactions.
- 58b5ae9d62bd 14.0 landed
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Fix inline marking introduced in commit 464824323e.
- ac15b499f7f9 14.0 landed
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Add support for streaming to built-in logical replication.
- 464824323e57 14.0 landed
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Fix the SharedFileSetUnregister API.
- 4ab77697f67a 14.0 landed
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Fix comment in procarray.c
- 77c7267c37f7 14.0 cited
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Suppress compiler warning in non-cassert builds.
- e942af7b8261 14.0 cited
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Extend the BufFile interface.
- 808e13b282ef 14.0 landed
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Mark a few logical decoding related variables with PGDLLIMPORT.
- b48cac3b10a0 14.0 landed
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Implement streaming mode in ReorderBuffer.
- 7259736a6e5b 14.0 landed
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Extend the logical decoding output plugin API with stream methods.
- 45fdc9738b36 14.0 landed
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WAL Log invalidations at command end with wal_level=logical.
- c55040ccd017 14.0 landed
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Immediately WAL-log subtransaction and top-level XID association.
- 0bead9af484c 14.0 landed
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Allow logical replication to transfer data in binary format.
- 9de77b545313 14.0 cited
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Only superuser can set sslcert/sslkey in postgres_fdw user mappings
- cebf9d6e6ee1 13.0 cited
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Track statistics for spilling of changes from ReorderBuffer.
- 9290ad198b15 13.0 landed
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Add logical_decoding_work_mem to limit ReorderBuffer memory usage.
- cec2edfa7859 13.0 landed
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logical decoding: process ASSIGNMENT during snapshot build
- bac2fae05c77 13.0 cited
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Emit invalidations to standby for transactions without xid.
- c6ff84b06a68 9.6.0 cited
On 01/03/2018 09:06 PM, Tomas Vondra wrote:
> Hi,
>
> attached is v4 of the patch series, with a couple of changes:
>
> 1) Fixes a bunch of bugs I discovered during stress testing.
>
> I'm not going to go into details, but the main fixes are related to
> properly updating progress from the worker, and not streaming when
> creating the logical replication slot.
>
> 2) Introduces columns into pg_stat_replication.
>
> The new columns track various kinds of statistics (number of xacts,
> bytes, ...) about spill-to-disk/streaming. This will be useful when
> tuning the GUC memory limit.
>
> 3) Two temporary bugfixes that make the patch series work.
>
Forgot to mention that the v4 also extends the CREATE SUBSCRIPTION to
allow customizing the streaming and memory limit. So you can do
CREATE SUBSCRIPTION ... WITH (streaming=on, work_mem=1024)
and this subscription will allow streaming, and the logica_work_mem (on
provider) will be set to 1MB.
--
Tomas Vondra http://www.2ndQuadrant.com
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