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Posted to commits@doris.apache.org by GitBox <gi...@apache.org> on 2022/06/30 14:11:31 UTC
[GitHub] [doris] luozenglin opened a new pull request, #10533: [feature][tracing] Support query tracing to improve doris observabil…
luozenglin opened a new pull request, #10533:
URL: https://github.com/apache/doris/pull/10533
…ity by introducing OpenTelemetry.
The collection of query traces is implemented in fe and be, and the spans are exported to zipkin.
# Proposed changes
Issue Number: close #xxx
DSIP: <https://cwiki.apache.org/confluence/display/DORIS/DSIP-012%3A+Introduce+opentelemetry>
## Problem Summary:
This pr implements the collection and sending of query traces. fe turns on traces, collects spans and propagates the traces information to be via prc. eventually each node exports the collected spans to zipkin.
```
┌──────────────────────┐
│ fe │
│ │
│ span root │
│ │ │
│ ┌───────┴────┐ ├────────────────┐
│ │ │ │ │
│ span A span B │ │
│ │ │ │
│ │ │ │
└────────────────┼─────┘ │
│ │
┌─────┴───────────────┐ │
│ │ │
┌──────────┼───────────┐ │
│ │ be │ be │ ┌────────────┐
│ │ │ │ │ │
│ span C │ │ span │ │
│ │ ├────────────────┴──────────► zipkin │
│ ┌─────┴───────┐ │ │ │
│ │ │ │ │ │
│ span D span E │ │ │
│ │ └────────────┘
└──────────────────────┘
```
### Example：
1. Start zipkin:
```
curl -sSL https://zipkin.io/quickstart.sh | bash -s
java -jar zipkin.jar
```
2. Add Configuration：
fe.conf:
```
enable_tracing=true
trace_export_url=http://127.0.0.1:9411/api/v2/spans
```
be.conf:
```
enable_tracing=true
trace_export_url=http://127.0.0.1:9411/api/v2/spans
```
3. Execute a query
4. From zipkin UI：
### Performance loss
I have done ssb multi-table join performance test, tracing on the query performance is not significant:
||before|before|before|tracing|tracing|tracing|
|:--|:--|:--|:--|:--|:--|:--|
|q1 |570.2 |557.0 |584.4 |570.4 |597.2 |577.6|
|q2 |84.2 |83.8 |86.2 |84.0 |84.2 |81.4|
|q3 |69.6 |72.0 |67.6 |72.4 |70.6 |68.8|
|q4 |1026.8 |1185.4 |1055.4 |1038.8 |1006.4 |1055.2|
|q5 |383.2 |432.4 |380.6 |409.0 |398.6 |419.2|
|q6 |390.6 |441.6 |395.2 |421.0 |405.8 |406.0|
|q7 |6838.0 |6232.2 |6639.6 |6666.4 |6793.4 |6896.6|
|q8 |409.2 |367.6 |376.8 |401.6 |430.8 |391.0|
|q9 |368.2 |348.4 |348.8 |352.4 |354.8 |354.0|
|q10|97.2 |98.4 | 93.4 | 101.0 | 98.8 | 98.2|
|q11|3922.6 |4999.2 | 3911.6 | 4409.0 | 4066.6 | 4059.0|
|q12|1325.0 |1708.2 | 1273.4 | 1291.4 | 1282.0 | 1280.6|
|q13|584.4 |676.2 | 537.0 | 551.2 | 535.2 | 551.2|
jmeter stress test：
before:
```
summary + 14000 in 00:00:07 = 2138.1/s Avg: 42 Min: 7 Max: 238 Err: 0 (0.00%) Active: 100 Started: 100 Finished: 0
summary + 68872 in 00:00:30 = 2295.8/s Avg: 43 Min: 4 Max: 321 Err: 0 (0.00%) Active: 100 Started: 100 Finished: 0
summary = 82872 in 00:00:37 = 2267.5/s Avg: 43 Min: 4 Max: 321 Err: 0 (0.00%)
summary + 70385 in 00:00:30 = 2346.2/s Avg: 42 Min: 5 Max: 1048 Err: 0 (0.00%) Active: 100 Started: 100 Finished: 0
summary = 153257 in 00:01:07 = 2303.0/s Avg: 43 Min: 4 Max: 1048 Err: 0 (0.00%)
summary + 69031 in 00:00:30 = 2301.0/s Avg: 43 Min: 4 Max: 1052 Err: 0 (0.00%) Active: 100 Started: 100 Finished: 0
summary = 222288 in 00:01:37 = 2302.4/s Avg: 43 Min: 4 Max: 1052 Err: 0 (0.00%)
summary + 8316 in 00:00:04 = 2337.3/s Avg: 42 Min: 9 Max: 1047 Err: 0 (0.00%) Active: 0 Started: 100 Finished: 100
summary = 230604 in 00:01:40 = 2303.6/s Avg: 43 Min: 4 Max: 1052 Err: 0 (0.00%)
```
tracing:
```
summary + 1 in 00:00:00 = 3.5/s Avg: 124 Min: 124 Max: 124 Err: 0 (0.00%) Active: 23 Started: 23 Finished: 0
summary + 64305 in 00:00:28 = 2334.5/s Avg: 42 Min: 4 Max: 1056 Err: 0 (0.00%) Active: 100 Started: 100 Finished: 0
summary = 64306 in 00:00:28 = 2310.8/s Avg: 42 Min: 4 Max: 1056 Err: 0 (0.00%)
summary + 69646 in 00:00:30 = 2321.6/s Avg: 43 Min: 6 Max: 1051 Err: 0 (0.00%) Active: 100 Started: 100 Finished: 0
summary = 133952 in 00:00:58 = 2316.4/s Avg: 42 Min: 4 Max: 1056 Err: 0 (0.00%)
summary + 69486 in 00:00:30 = 2316.2/s Avg: 43 Min: 4 Max: 1057 Err: 0 (0.00%) Active: 100 Started: 100 Finished: 0
summary = 203438 in 00:01:28 = 2316.3/s Avg: 42 Min: 4 Max: 1057 Err: 0 (0.00%)
summary + 28284 in 00:00:12 = 2303.8/s Avg: 43 Min: 7 Max: 1052 Err: 0 (0.00%) Active: 0 Started: 100 Finished: 100
summary = 231722 in 00:01:40 = 2314.8/s Avg: 42 Min: 4 Max: 1057 Err: 0 (0.00%)
```
## Checklist(Required)
1. Does it affect the original behavior: (Yes/No/I Don't know)
2. Has unit tests been added: (Yes/No/No Need)
3. Has document been added or modified: (Yes/No/No Need)
4. Does it need to update dependencies: (Yes/No)
6. Are there any changes that cannot be rolled back: (Yes/No)
## Further comments
If this is a relatively large or complex change, kick off the discussion at [dev@doris.apache.org](mailto:dev@doris.apache.org) by explaining why you chose the solution you did and what alternatives you considered, etc...
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[GitHub] [doris] morningman commented on pull request #10533: [feature][tracing] Support query tracing to improve doris observabil…
Posted by GitBox <gi...@apache.org>.
morningman commented on PR #10533:
URL: https://github.com/apache/doris/pull/10533#issuecomment-1172829210
> ```
> insert into ods_logout(day, game, plat, playerid, dt) values('2019-04-26', 'xx', 'yyy', '1136638398824557', '2019-04-26 00:00:00');
> ```
OK, I checked and it passed.
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[GitHub] [doris] github-actions[bot] commented on pull request #10533: [feature][tracing] Support query tracing to improve doris observabil…
Posted by GitBox <gi...@apache.org>.
github-actions[bot] commented on PR #10533:
URL: https://github.com/apache/doris/pull/10533#issuecomment-1179498636
PR approved by at least one committer and no changes requested.
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[GitHub] [doris] morningman commented on pull request #10533: [feature][tracing] Support query tracing to improve doris observabil…
Posted by GitBox <gi...@apache.org>.
morningman commented on PR #10533:
URL: https://github.com/apache/doris/pull/10533#issuecomment-1172475410
```
CREATE TABLE `ods_logout` (
`day` date NULL,
`game` varchar(500) NULL,
`plat` varchar(500) NULL,
`dt` datetime NULL,
`time` bigint(20) NULL,
`sid` int(11) NULL,
`pid` varchar(500) NULL,
`gid` varchar(500) NULL,
`account` varchar(500) NULL,
`playerid` varchar(500) NULL,
`prop` varchar(500) NULL,
`p01` varchar(500) NULL,
`p02` varchar(500) NULL,
`p03` varchar(500) NULL,
`p04` varchar(500) NULL,
`p05` varchar(500) NULL,
`p06` varchar(500) NULL,
`p07` varchar(500) NULL,
`p08` varchar(500) NULL,
`p09` varchar(500) NULL,
`p10` varchar(500) NULL,
`p11` varchar(500) NULL,
`p12` varchar(500) NULL,
`p13` varchar(500) NULL,
`p14` varchar(500) NULL,
`p15` varchar(500) NULL
) ENGINE=OLAP
DUPLICATE KEY(`day`, `game`, `plat`)
PARTITION BY RANGE(`day`)
(PARTITION p201907 VALUES [('2019-04-01'), ('2019-05-01')))
DISTRIBUTED BY HASH(`game`, `plat`) BUCKETS 4
PROPERTIES (
"replication_allocation" = "tag.location.default: 1",
"in_memory" = "false",
"storage_format" = "V2"
);
insert into ods_logout(day, game, plat, playerid, dt) values('2019-04-26', 'xx', 'yyy', '1136638398824557', '2019-04-26 00:00:00');
```
Tha above case may lead to coredump in your branch. I don't know why, could you try it?
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[GitHub] [doris] luozenglin commented on a diff in pull request #10533: [feature][tracing] Support query tracing to improve doris observabil…
Posted by GitBox <gi...@apache.org>.
luozenglin commented on code in PR #10533:
URL: https://github.com/apache/doris/pull/10533#discussion_r912311732
##########
be/src/runtime/plan_fragment_executor.cpp:
##########
@@ -262,30 +270,36 @@ Status PlanFragmentExecutor::open_vectorized_internal() {
RETURN_IF_ERROR(_sink->open(runtime_state()));
}
- while (true) {
- doris::vectorized::Block* block;
+ {
+ telemetry::SpanGuard sink_send_span_guard {};
+ while (true) {
+ doris::vectorized::Block* block;
- {
- SCOPED_CPU_TIMER(_fragment_cpu_timer);
- RETURN_IF_ERROR(get_vectorized_internal(&block));
- }
+ {
+ SCOPED_CPU_TIMER(_fragment_cpu_timer);
+ RETURN_IF_ERROR(get_vectorized_internal(&block));
+ }
- if (block == NULL) {
- break;
- }
+ if (block == NULL) {
+ break;
+ }
- SCOPED_TIMER(profile()->total_time_counter());
- SCOPED_CPU_TIMER(_fragment_cpu_timer);
- // Collect this plan and sub plan statistics, and send to parent plan.
- if (_collect_query_statistics_with_every_batch) {
- _collect_query_statistics();
- }
+ SCOPED_TIMER(profile()->total_time_counter());
+ SCOPED_CPU_TIMER(_fragment_cpu_timer);
+ // Collect this plan and sub plan statistics, and send to parent plan.
+ if (_collect_query_statistics_with_every_batch) {
+ _collect_query_statistics();
+ }
- auto st = _sink->send(runtime_state(), block);
- if (st.is_end_of_file()) {
- break;
+ auto st = _sink->send(runtime_state(), block);
+ if (UNLIKELY(!sink_send_span_guard.has_span())) {
+ sink_send_span_guard.set_span(_sink->get_send_span());
Review Comment:
Because the _send_span in _sink is assigned at the first call to _sink->send. Maybe I can change the code to make sink_send_span_guard set span outside of the while loop to reduce this branch judgment.
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[GitHub] [doris] luozenglin commented on pull request #10533: [feature][tracing] Support query tracing to improve doris observabil…
Posted by GitBox <gi...@apache.org>.
luozenglin commented on PR #10533:
URL: https://github.com/apache/doris/pull/10533#issuecomment-1172821481
> ```
> CREATE TABLE `ods_logout` (
> `day` date NULL,
> `game` varchar(500) NULL,
> `plat` varchar(500) NULL,
> `dt` datetime NULL,
> `time` bigint(20) NULL,
> `sid` int(11) NULL,
> `pid` varchar(500) NULL,
> `gid` varchar(500) NULL,
> `account` varchar(500) NULL,
> `playerid` varchar(500) NULL,
> `prop` varchar(500) NULL,
> `p01` varchar(500) NULL,
> `p02` varchar(500) NULL,
> `p03` varchar(500) NULL,
> `p04` varchar(500) NULL,
> `p05` varchar(500) NULL,
> `p06` varchar(500) NULL,
> `p07` varchar(500) NULL,
> `p08` varchar(500) NULL,
> `p09` varchar(500) NULL,
> `p10` varchar(500) NULL,
> `p11` varchar(500) NULL,
> `p12` varchar(500) NULL,
> `p13` varchar(500) NULL,
> `p14` varchar(500) NULL,
> `p15` varchar(500) NULL
> ) ENGINE=OLAP
> DUPLICATE KEY(`day`, `game`, `plat`)
> PARTITION BY RANGE(`day`)
> (PARTITION p201907 VALUES [('2019-04-01'), ('2019-05-01')))
> DISTRIBUTED BY HASH(`game`, `plat`) BUCKETS 4
> PROPERTIES (
> "replication_allocation" = "tag.location.default: 1",
> "in_memory" = "false",
> "storage_format" = "V2"
> );
>
> insert into ods_logout(day, game, plat, playerid, dt) values('2019-04-26', 'xx', 'yyy', '1136638398824557', '2019-04-26 00:00:00');
> ```
>
> Tha above case may lead to coredump in your branch. I don't know why, could you try it?
This problem is solved in this pr's opentelemetry-cpp-1.4.0.patch, you need to recompile the thirdparty opentelemetry.
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[GitHub] [doris] morningman commented on a diff in pull request #10533: [feature][tracing] Support query tracing to improve doris observabil…
Posted by GitBox <gi...@apache.org>.
morningman commented on code in PR #10533:
URL: https://github.com/apache/doris/pull/10533#discussion_r912035393
##########
be/src/runtime/plan_fragment_executor.cpp:
##########
@@ -262,30 +270,36 @@ Status PlanFragmentExecutor::open_vectorized_internal() {
RETURN_IF_ERROR(_sink->open(runtime_state()));
}
- while (true) {
- doris::vectorized::Block* block;
+ {
+ telemetry::SpanGuard sink_send_span_guard {};
+ while (true) {
+ doris::vectorized::Block* block;
- {
- SCOPED_CPU_TIMER(_fragment_cpu_timer);
- RETURN_IF_ERROR(get_vectorized_internal(&block));
- }
+ {
+ SCOPED_CPU_TIMER(_fragment_cpu_timer);
+ RETURN_IF_ERROR(get_vectorized_internal(&block));
+ }
- if (block == NULL) {
- break;
- }
+ if (block == NULL) {
+ break;
+ }
- SCOPED_TIMER(profile()->total_time_counter());
- SCOPED_CPU_TIMER(_fragment_cpu_timer);
- // Collect this plan and sub plan statistics, and send to parent plan.
- if (_collect_query_statistics_with_every_batch) {
- _collect_query_statistics();
- }
+ SCOPED_TIMER(profile()->total_time_counter());
+ SCOPED_CPU_TIMER(_fragment_cpu_timer);
+ // Collect this plan and sub plan statistics, and send to parent plan.
+ if (_collect_query_statistics_with_every_batch) {
+ _collect_query_statistics();
+ }
- auto st = _sink->send(runtime_state(), block);
- if (st.is_end_of_file()) {
- break;
+ auto st = _sink->send(runtime_state(), block);
+ if (UNLIKELY(!sink_send_span_guard.has_span())) {
+ sink_send_span_guard.set_span(_sink->get_send_span());
Review Comment:
I don't understand why set span **after** `_sink->send`, not **before**?
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[GitHub] [doris] morningman commented on a diff in pull request #10533: [feature][tracing] Support query tracing to improve doris observabil…
Posted by GitBox <gi...@apache.org>.
morningman commented on code in PR #10533:
URL: https://github.com/apache/doris/pull/10533#discussion_r912317934
##########
be/src/runtime/plan_fragment_executor.cpp:
##########
@@ -262,30 +270,36 @@ Status PlanFragmentExecutor::open_vectorized_internal() {
RETURN_IF_ERROR(_sink->open(runtime_state()));
}
- while (true) {
- doris::vectorized::Block* block;
+ {
+ telemetry::SpanGuard sink_send_span_guard {};
+ while (true) {
+ doris::vectorized::Block* block;
- {
- SCOPED_CPU_TIMER(_fragment_cpu_timer);
- RETURN_IF_ERROR(get_vectorized_internal(&block));
- }
+ {
+ SCOPED_CPU_TIMER(_fragment_cpu_timer);
+ RETURN_IF_ERROR(get_vectorized_internal(&block));
+ }
- if (block == NULL) {
- break;
- }
+ if (block == NULL) {
+ break;
+ }
- SCOPED_TIMER(profile()->total_time_counter());
- SCOPED_CPU_TIMER(_fragment_cpu_timer);
- // Collect this plan and sub plan statistics, and send to parent plan.
- if (_collect_query_statistics_with_every_batch) {
- _collect_query_statistics();
- }
+ SCOPED_TIMER(profile()->total_time_counter());
+ SCOPED_CPU_TIMER(_fragment_cpu_timer);
+ // Collect this plan and sub plan statistics, and send to parent plan.
+ if (_collect_query_statistics_with_every_batch) {
+ _collect_query_statistics();
+ }
- auto st = _sink->send(runtime_state(), block);
- if (st.is_end_of_file()) {
- break;
+ auto st = _sink->send(runtime_state(), block);
+ if (UNLIKELY(!sink_send_span_guard.has_span())) {
+ sink_send_span_guard.set_span(_sink->get_send_span());
Review Comment:
So in your current implementation, the **first** send call will not be covered in this `_send_span`?
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[GitHub] [doris] luozenglin commented on a diff in pull request #10533: [feature][tracing] Support query tracing to improve doris observabil…
Posted by GitBox <gi...@apache.org>.
luozenglin commented on code in PR #10533:
URL: https://github.com/apache/doris/pull/10533#discussion_r912332779
##########
be/src/runtime/plan_fragment_executor.cpp:
##########
@@ -262,30 +270,36 @@ Status PlanFragmentExecutor::open_vectorized_internal() {
RETURN_IF_ERROR(_sink->open(runtime_state()));
}
- while (true) {
- doris::vectorized::Block* block;
+ {
+ telemetry::SpanGuard sink_send_span_guard {};
+ while (true) {
+ doris::vectorized::Block* block;
- {
- SCOPED_CPU_TIMER(_fragment_cpu_timer);
- RETURN_IF_ERROR(get_vectorized_internal(&block));
- }
+ {
+ SCOPED_CPU_TIMER(_fragment_cpu_timer);
+ RETURN_IF_ERROR(get_vectorized_internal(&block));
+ }
- if (block == NULL) {
- break;
- }
+ if (block == NULL) {
+ break;
+ }
- SCOPED_TIMER(profile()->total_time_counter());
- SCOPED_CPU_TIMER(_fragment_cpu_timer);
- // Collect this plan and sub plan statistics, and send to parent plan.
- if (_collect_query_statistics_with_every_batch) {
- _collect_query_statistics();
- }
+ SCOPED_TIMER(profile()->total_time_counter());
+ SCOPED_CPU_TIMER(_fragment_cpu_timer);
+ // Collect this plan and sub plan statistics, and send to parent plan.
+ if (_collect_query_statistics_with_every_batch) {
+ _collect_query_statistics();
+ }
- auto st = _sink->send(runtime_state(), block);
- if (st.is_end_of_file()) {
- break;
+ auto st = _sink->send(runtime_state(), block);
+ if (UNLIKELY(!sink_send_span_guard.has_span())) {
+ sink_send_span_guard.set_span(_sink->get_send_span());
Review Comment:
The `_send_span` overrides the first to last call to `send`, and I've changed the `sink_send_span_guard` to a more concise code.
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[GitHub] [doris] github-actions[bot] commented on pull request #10533: [feature][tracing] Support query tracing to improve doris observabil…
Posted by GitBox <gi...@apache.org>.
github-actions[bot] commented on PR #10533:
URL: https://github.com/apache/doris/pull/10533#issuecomment-1179498641
PR approved by anyone and no changes requested.
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[GitHub] [doris] morningman merged pull request #10533: [feature][tracing] Support query tracing to improve doris observabil…
Posted by GitBox <gi...@apache.org>.
morningman merged PR #10533:
URL: https://github.com/apache/doris/pull/10533
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