zbq.dean created HBASE-23056:
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Summary: Block count is 0 when BucketCache using persistent
IOEngine and retrieve from file
Key: HBASE-23056
URL: https://issues.apache.org/jira/browse/HBASE-23056
Project: HBase
Issue Type: Bug
Components: BucketCache
Affects Versions: 2.2.1, 1.5.0, master
Reporter: zbq.dean
Attachments: after_RS_restart.png, before_RS_restart.png
We use FileIOEngine to store and read block data in BucketCache. Before stop
RS, the BucketCache metrics in WebUI is like before_RS_restart.png, the block
count is 3. When stop RS, the backing map is persistent to file. And then start
RS, the metrics is like after_RS_restart.png, the block count is 0, but the
size of blocks is correct.
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