[Enhancement](multi catalog) Support hive meta cache TTL #18102
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To implement this solution, the system would set the value corresponding to Guava's expireAfterAccess to the configuration value. Guava is a widely used open-source library for Java, which provides various utilities including caching mechanisms. The expireAfterAccess configuration in Guava's cache mechanism specifies the duration after which a cache entry will be automatically removed from the cache if it has not been accessed during that time. |
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Currently, if user modify the file on hdfs directly, no through hive. The changes of file will not be noticed by Doris and user will get wrong data. Support the TTL(Time-to-Live) config of File Cache, so that the stale file info will be invalidated automatically after expiring. 1.Add a parameter configuration to set file cache ttl. "file.meta.cache.ttl-second". 2.Set the value corresponding to guava expireAfterAccess to the configuration value. Co-authored-by: lexluo <lexluo@tencent.com>
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Proposed changes
Issue Number: #17947
Currently, if user modify the file on hdfs directly, no through hive. The changes of file will not be noticed by Doris and user
will get wrong data. Support the TTL(Time-to-Live) config of File Cache, so that the stale file info will be invalidated automatically after expiring.
Problem summary
1.Add a parameter configuration to set file cache ttl. "file.meta.cache.ttl-second".
2.Set the value corresponding to guava expireAfterAccess to the configuration value.
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