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Posted to reviews@iotdb.apache.org by GitBox <gi...@apache.org> on 2021/06/04 08:39:01 UTC
[GitHub] [iotdb] JackieTien97 opened a new pull request #3339: [To rel/0.12] Try to fix sg dead lock
JackieTien97 opened a new pull request #3339:
URL: https://github.com/apache/iotdb/pull/3339
## Description
In current rel/0.12, we still occasionally meet dead lock. However, when we use jstack to analyze the dead lock, we will find a strange thing that the write or read threads are all blocked by insert write lock of StorageGroupProcessor, but we can't find which thread holds that lock in the jstack log.
## Solution
In this pr, I move all the codes behind lock() method into try-finnally block and support a new sql called `show lock info` which will display all the sgs' lock info. You can also use `show lock info root.sg1` to only show `root.sg1`'s lock info. In the lock info, we will see which method is holding the lock which will help us find the fundamental reasons of dead lock when we meet the case again.
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[GitHub] [iotdb] sonarcloud[bot] commented on pull request #3339: [To rel/0.12] Try to fix sg dead lock
Posted by GitBox <gi...@apache.org>.
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URL: https://github.com/apache/iotdb/pull/3339#issuecomment-854525441
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[GitHub] [iotdb] sonarcloud[bot] commented on pull request #3339: [To rel/0.12] Try to fix sg dead lock
Posted by GitBox <gi...@apache.org>.
sonarcloud[bot] commented on pull request #3339:
URL: https://github.com/apache/iotdb/pull/3339#issuecomment-854505094
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[GitHub] [iotdb] HTHou merged pull request #3339: [To rel/0.12] Try to fix sg dead lock
Posted by GitBox <gi...@apache.org>.
HTHou merged pull request #3339:
URL: https://github.com/apache/iotdb/pull/3339
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[GitHub] [iotdb] sonarcloud[bot] removed a comment on pull request #3339: [To rel/0.12] Try to fix sg dead lock
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