postgres

Author SHA1 Message Date

Author	SHA1	Message	Date
Tom Lane	4a054069a3	Improve display of query results in isolation tests. Previously, isolationtester displayed SQL query results using some ad-hoc code that clearly hadn't had much effort expended on it. Field values longer than 14 characters weren't separated from the next field, and usually caused misalignment of the columns too. Also there was no visual separation of a query's result from subsequent isolationtester output. This made test result files confusing and hard to read. To improve matters, let's use libpq's PQprint() function. Although that's long since unused by psql, it's still plenty good enough for the purpose here. Like `741d7f104`, back-patch to all supported branches, so that this isn't a stumbling block for back-patching isolation test changes. Discussion: https://postgr.es/m/582362.1623798221@sss.pgh.pa.us	5 years ago
Amit Kapila	9653f24ad8	Fix 'skip-empty-xacts' option in test_decoding for streaming mode. In streaming mode, the transaction can be decoded in multiple streams and those streams can be interleaved with streams of other transactions. So, we can't remember the transaction's write status in the logical decoding context because that might get changed due to some other transactions and lead to wrong answers for 'skip-empty-xacts' option. We decided to keep each transaction's write status in the ReorderBufferTxn to avoid interleaved streams changing the status of some unrelated transactions. Diagnosed-by: Amit Kapila Author: Dilip Kumar Reviewed-by: Amit Kapila Discussion: https://postgr.es/m/CAA4eK1LR7=XNM_TLmpZMFuV8ZQpoxkem--NZJYf8YXmesbvwLA@mail.gmail.com	5 years ago
Amit Kapila	0ba5181c00	Skip empty transaction stream in test_decoding. We were decoding empty transactions via streaming APIs added in commit `45fdc9738b` even when the user used the option 'skip-empty-xacts'. The APIs makes no effort to skip empty xacts under the assumption that we will never try to stream such transactions. However, that is not true because we can pick to stream a transaction that has change messages for REORDER_BUFFER_CHANGE_INTERNAL_SNAPSHOT and we don't send such messages to downstream rather they are just to update the internal state. So, we need to skip such xacts when plugin uses the option 'skip-empty-xacts'. Diagnosed-By: Amit Kapila Author: Dilip Kumar Reviewed-by: Amit Kapila Discussion: https://postgr.es/m/CAA4eK1+OqgFNZkf7=ETe_y5ntjgDk3T0wcdkd4Sot_u1hySGfw@mail.gmail.com	5 years ago

Tom Lane

Improve display of query results in isolation tests.

Previously, isolationtester displayed SQL query results using some
ad-hoc code that clearly hadn't had much effort expended on it.
Field values longer than 14 characters weren't separated from
the next field, and usually caused misalignment of the columns
too.  Also there was no visual separation of a query's result
from subsequent isolationtester output.  This made test result
files confusing and hard to read.

To improve matters, let's use libpq's PQprint() function.  Although
that's long since unused by psql, it's still plenty good enough
for the purpose here.

Like 741d7f104, back-patch to all supported branches, so that this
isn't a stumbling block for back-patching isolation test changes.

Discussion: https://postgr.es/m/582362.1623798221@sss.pgh.pa.us

5 years ago

Amit Kapila

9653f24ad8

Fix 'skip-empty-xacts' option in test_decoding for streaming mode.

In streaming mode, the transaction can be decoded in multiple streams and
those streams can be interleaved with streams of other transactions. So,
we can't remember the transaction's write status in the logical decoding
context because that might get changed due to some other transactions and
lead to wrong answers for 'skip-empty-xacts' option. We decided to keep
each transaction's write status in the ReorderBufferTxn to avoid
interleaved streams changing the status of some unrelated transactions.

Diagnosed-by: Amit Kapila
Author: Dilip Kumar
Reviewed-by: Amit Kapila
Discussion: https://postgr.es/m/CAA4eK1LR7=XNM_TLmpZMFuV8ZQpoxkem--NZJYf8YXmesbvwLA@mail.gmail.com

5 years ago

Amit Kapila

0ba5181c00

Skip empty transaction stream in test_decoding.

We were decoding empty transactions via streaming APIs added in commit
45fdc9738b even when the user used the option 'skip-empty-xacts'. The APIs
makes no effort to skip empty xacts under the assumption that we will
never try to stream such transactions. However, that is not true because
we can pick to stream a transaction that has change messages for
REORDER_BUFFER_CHANGE_INTERNAL_SNAPSHOT and we don't send such messages to
downstream rather they are just to update the internal state. So, we need
to skip such xacts when plugin uses the option 'skip-empty-xacts'.

Diagnosed-By: Amit Kapila
Author: Dilip Kumar
Reviewed-by: Amit Kapila
Discussion: https://postgr.es/m/CAA4eK1+OqgFNZkf7=ETe_y5ntjgDk3T0wcdkd4Sot_u1hySGfw@mail.gmail.com

5 years ago

3 Commits (f48b4f892f76ee2b34968013c8ea67b1dfd4fa26)