pan3793 opened a new pull request, #7455:
URL: https://github.com/apache/kyuubi/pull/7455
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### Why are the changes needed?
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Close #6832. This connector gives the Hadoop administrator a chance to
analyze YARN aggregated logs at the cluster level - aggregate logs across
applications by host to diagnose potential host hardware issues
The current initial implementation has several limitations:
- feat: only support `TFile`, but not `IFile`
- perf: only supports pushing down `app_id`, `user`, `host` filters, does
not support pushing down `container_id`, `log_type`, though they are supposed
to be selective
- perf: listing aggregated log files runs in a single thread during the
planning phase - for a large cluster, it should be run in parallel on the
driver side or launch a job to do that on the executor side.
- etc.
### How was this patch tested?
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UT is not added yet, as this requires a real YARN cluster with history agg
logs.
```
kyuubi-beeline -u 'jdbc:kyuubi://spark-dev1.foo.bar:10009/default' \
--conf
spark.jars=/tmp/kyuubi-spark-connector-yarn_2.12-1.12.0-SNAPSHOT.jar \
--conf
spark.sql.catalog.yarn=org.apache.kyuubi.spark.connector.yarn.YarnCatalog
0: > select
. .> mtime, app_id, container_id, host, log_type, message
. .> from yarn.app_logs
. .> where
. .> user = 'hadoop'
. .> and host = 'spark-dev2.foo.bar'
. .> and message like '%ERROR%'
. .> and message not like '%RECEIVED SIGNAL TERM%'
. .> and message not like '%Aborting task%'
. .> limit 2;
...
+--------------------------+---------------------------------+-----------------------------------------+---------------------+-----------+----------------------------------------------------+
| mtime | app_id |
container_id | host | log_type |
message |
+--------------------------+---------------------------------+-----------------------------------------+---------------------+-----------+----------------------------------------------------+
| 2025-04-03 18:07:18.893 | application_1743671377509_0001 |
container_1743671377509_0001_01_000001 | spark-dev2.foo.bar | stdout |
25/04/03 18:07:15 ERROR ApplicationMaster$AMEndpoint: Driver terminated with
exit code 1! Shutting down. spark-dev1.foo.bar:16601 |
| 2025-04-03 18:07:18.893 | application_1743671377509_0001 |
container_1743671377509_0001_01_000001 | spark-dev2.foo.bar | stdout |
25/04/03 18:07:15 ERROR ApplicationMaster$AMEndpoint: Driver terminated with
exit code 1! Shutting down. spark-dev1.foo.bar:16601 |
+--------------------------+---------------------------------+-----------------------------------------+---------------------+-----------+----------------------------------------------------+
2 rows selected (0.648 seconds)
```
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Assisted-by: Claude Opus 4.7.
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