From a20c2376768721bc8006d966f3dca28e600473a6 Mon Sep 17 00:00:00 2001 From: stack Date: Tue, 9 Sep 2014 15:00:23 -0700 Subject: [PATCH] Note on bucketcache needs 0.98.6 --- src/main/docbkx/book.xml | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/src/main/docbkx/book.xml b/src/main/docbkx/book.xml index 19dd770157b..683d8eff517 100644 --- a/src/main/docbkx/book.xml +++ b/src/main/docbkx/book.xml @@ -2144,7 +2144,7 @@ rs.close(); Block Cache Reporting: UI See the RegionServer UI for detail on caching deploy. Since HBase-0.98.4, the Block Cache detail has been significantly extended showing configurations, - sizings, current usage, and even detail on block counts and types. + sizings, current usage, time-in-the-cache, and even detail on block counts and types.
@@ -2154,6 +2154,11 @@ rs.close(); entirely within the Java heap. BucketCache is mainly intended for keeping blockcache data offheap, although BucketCache can also keep data onheap and serve from a file-backed cache. + BucketCache is production ready as of hbase-0.98.6 + To run with BucketCache, you need HBASE-11678. This was included in + hbase-0.98.6. + + Fetching will always be slower when fetching from BucketCache,