Bryan Beaudreault created HBASE-27891: -----------------------------------------
Summary: Report heap used by BucketCache as a jmx metric Key: HBASE-27891 URL: https://issues.apache.org/jira/browse/HBASE-27891 Project: HBase Issue Type: Improvement Reporter: Bryan Beaudreault The BucketCache can take a non-trivial amount of heap, especially for very large cache sizes. For example, we have a server with 500k blocks in the bucket cache, and according to a heap dump it was holding around 260mb. One needs to account for this when determining the size of heap to use, so we should report it. The major contributors I saw were the offsetLock, blocksByHFile set, and backingMap. -- This message was sent by Atlassian Jira (v8.20.10#820010)