sijie commented on a change in pull request #913: [WIP] Refactor FileInfo
locking and refcounting out IndexPersistenceMgr
URL: https://github.com/apache/bookkeeper/pull/913#discussion_r158544101
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File path:
bookkeeper-server/src/main/java/org/apache/bookkeeper/bookie/IndexPersistenceMgr.java
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@@ -80,15 +77,13 @@ public static final String getLedgerName(long ledgerId) {
}
// use two separate cache for write and read
- final Cache<Long, FileInfo> writeFileInfoCache;
- final Cache<Long, FileInfo> readFileInfoCache;
+ final Cache<Long, CachedFileInfo> writeFileInfoCache;
+ final Cache<Long, CachedFileInfo> readFileInfoCache;
+ final FileInfoBackingCache fileInfoBackingCache;
Review comment:
The change here is same as the original change I made using guava cache at
Twitter. I did it using two guava cache with one backing concurrent map.
However when I left twitter, Yiming found some bugs using this approach, which
it made him remove the backing concurrent hashmap and use guava cache only.
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