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and return if there is inordinate delay.
rishitesh
reviewed
Jul 17, 2018
| try { | ||
| return f.get(); | ||
| // Time out if it takes more than 30 seconds | ||
| return f.get(30, TimeUnit.SECONDS); |
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Won't it be best to shutdown "hmsQueriesExecutorService" in case of shutdown, which calls catalog.close();
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Ok. anyway, that is called. So why was the queries waiting?
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The query waits for the result on a future. A different thread runs the query and gets the result. The hive query kept on retrying ( from hive code ) and the future was indefinite wait. It looks like the hive thingy retries for a very very long time...
So thought of timing this out after 30 seconds. Please mind, this is the query on the metastore.
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This causes delay in shutdown etc. also even if hive query is failing due to cluster being down.
Changes proposed in this pull request
Do not wait for more than 30 seconds for any hive query. Added a timeout.
Patch testing
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