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https://issues.apache.org/jira/browse/CASSANDRA-11966?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15319920#comment-15319920
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Chris Lohfink commented on CASSANDRA-11966:
-------------------------------------------
An example before/after with patch:
Before:
{code}
activity
| timestamp | source
| source_elapsed | client
-----------------------------------------------------------------------------------------------------------------------+----------------------------+-----------+----------------+-----------
Execute CQL3 query | 2016-06-07 22:19:39.982000 | 127.0.0.1
| 0 | 127.0.0.1
Parsing select *
from system.peers; [SharedPool-Worker-1] | 2016-06-07 22:19:39.984000 |
127.0.0.1 | 2330 | 127.0.0.1
Preparing statement [SharedPool-Worker-1] | 2016-06-07 22:19:39.984000 |
127.0.0.1 | 2579 | 127.0.0.1
Computing ranges to query [SharedPool-Worker-1] | 2016-06-07 22:19:39.984000 |
127.0.0.1 | 2825 | 127.0.0.1
Submitting range requests on 1 ranges with a concurrency of 1 (403.2 rows
per range expected) [SharedPool-Worker-1] | 2016-06-07 22:19:39.984000 |
127.0.0.1 | 2954 | 127.0.0.1
Submitted 1
concurrent range requests [SharedPool-Worker-1] | 2016-06-07 22:19:39.985000 |
127.0.0.1 | 3051 | 127.0.0.1
Executing seq scan across 2 sstables for (min(-9223372036854775808),
min(-9223372036854775808)) [SharedPool-Worker-2] | 2016-06-07 22:19:39.985000 |
127.0.0.1 | 3172 | 127.0.0.1
Read 1 live and
0 tombstone cells [SharedPool-Worker-2] | 2016-06-07 22:19:39.985000 |
127.0.0.1 | 4015 | 127.0.0.1
Request complete | 2016-06-07 22:19:39.986322 | 127.0.0.1
| 4322 | 127.0.0.1
{code}
After:
{code}
activity
| timestamp |
source | source_elapsed | client
-----------------------------------------------------------------------------------------------------------------------------+----------------------------+-----------+----------------+-----------
Execute CQL3 query | 2016-06-07 22:24:59.502000 |
127.0.0.1 | 0 | 127.0.0.1
Parsing select *
from system.peers; [Native-Transport-Requests-2] | 2016-06-07 22:24:59.503000 |
127.0.0.1 | 1848 | 127.0.0.1
Preparing statement [Native-Transport-Requests-2] | 2016-06-07 22:24:59.503000
| 127.0.0.1 | 2090 | 127.0.0.1
Computing
ranges to query [Native-Transport-Requests-2] | 2016-06-07 22:24:59.503000 |
127.0.0.1 | 2396 | 127.0.0.1
Submitting range requests on 1 ranges with a concurrency of 1 (604.8 rows per
range expected) [Native-Transport-Requests-2] | 2016-06-07 22:24:59.504000 |
127.0.0.1 | 2546 | 127.0.0.1
Submitted 1 concurrent
range requests [Native-Transport-Requests-2] | 2016-06-07 22:24:59.504000 |
127.0.0.1 | 2650 | 127.0.0.1
Executing seq scan across 3 sstables for
(min(-9223372036854775808), min(-9223372036854775808)) [ReadStage-1] |
2016-06-07 22:24:59.504000 | 127.0.0.1 | 2751 | 127.0.0.1
Read 1 live and 0 tombstone cells [ReadStage-1] | 2016-06-07 22:24:59.505000 |
127.0.0.1 | 3656 | 127.0.0.1
Request complete | 2016-06-07 22:24:59.506012 |
127.0.0.1 | 4012 | 127.0.0.1
{code}
> When SEPWorker assigned work, set thread name to match pool
> -----------------------------------------------------------
>
> Key: CASSANDRA-11966
> URL: https://issues.apache.org/jira/browse/CASSANDRA-11966
> Project: Cassandra
> Issue Type: Improvement
> Components: Observability
> Reporter: Chris Lohfink
> Assignee: Chris Lohfink
> Priority: Minor
>
> Currently in traces, logs, and stacktraces you cant really associate the
> thread name with the pool since its just "SharedWorker-#". Calling setName
> around the task could improve logging and tracing a little while being a
> cheap operation.
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