Zhi Tang created IMPALA-12066:
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Summary: If the gathering thread skips table because it cannot
acquire a table lock, it may lead to issues with lost some updates.
Key: IMPALA-12066
URL: https://issues.apache.org/jira/browse/IMPALA-12066
Project: IMPALA
Issue Type: Bug
Components: Catalog
Affects Versions: Impala 4.2.0
Reporter: Zhi Tang
After IMPALA-6671, if the topic update thread cannot acquire a table lock it
skips the table from that topic update. In the
CatalogServiceCatalog#lockHdfsTblWithTimeout() method, we think it's safe to
skip the table when the gathering thread cannot get a read lock in attempt 2.
This is not entirely correct because it's not guarantee that the tbl version
will be updated outside current window of the topic updates when the mutating
thread fails for some reason.
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