hi, all I see many RTE "Cached an already cached block", anybody know why this happens? I googled this problem and found https://issues.apache.org/jira/browse/HBASE-2455 describes this but says it's fixed in 0.20.4 or 0.20.5. However my hbase version is 0.20.6. Here is one of regionserver log: http://pastebin.com/c8gba6XA
Thanks for any response.
