Github user vdiravka commented on a diff in the pull request:
https://github.com/apache/drill/pull/877#discussion_r129103339
--- Diff:
exec/java-exec/src/main/java/org/apache/drill/exec/store/dfs/MetadataContext.java
---
@@ -41,6 +41,10 @@
private PruneStatus pruneStatus = PruneStatus.NOT_STARTED;
+ // False values of these flags allow to avoid double reading of
corrupted or unsupported metadata files
+ public boolean isMetaCacheFileCorrect = true;
+ public boolean isMetaDirsCacheFileCorrect = true;
--- End diff --
The state is created after failed opening of the metadata cache file. And
will be stored per query.
There is no case for now to clear that state manually.
Note: `MetadataContext.clear()` removes all metadata context info
(`isMetadataFilesCorrupted` too).
I left only one state, since if one file is unsupported or corrupted it is
more likely that other files are the same. Even if not, it can be dangerous to
read some files, but ignore the others.
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