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https://issues.apache.org/jira/browse/HBASE-23056?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16950187#comment-16950187
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Hudson commented on HBASE-23056:
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Results for branch branch-2
        [build #2321 on 
builds.a.o|https://builds.apache.org/job/HBase%20Nightly/job/branch-2/2321/]: 
(/) *{color:green}+1 overall{color}*
----
details (if available):

(/) {color:green}+1 general checks{color}
-- For more information [see general 
report|https://builds.apache.org/job/HBase%20Nightly/job/branch-2/2321//General_Nightly_Build_Report/]




(/) {color:green}+1 jdk8 hadoop2 checks{color}
-- For more information [see jdk8 (hadoop2) 
report|https://builds.apache.org/job/HBase%20Nightly/job/branch-2/2321//JDK8_Nightly_Build_Report_(Hadoop2)/]


(/) {color:green}+1 jdk8 hadoop3 checks{color}
-- For more information [see jdk8 (hadoop3) 
report|https://builds.apache.org/job/HBase%20Nightly/job/branch-2/2321//JDK8_Nightly_Build_Report_(Hadoop3)/]


(/) {color:green}+1 source release artifact{color}
-- See build output for details.


(/) {color:green}+1 client integration test{color}


> 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: 1.5.0, 1.4.10, 2.2.1, master
>            Reporter: Baiqiang Zhao
>            Assignee: Baiqiang Zhao
>            Priority: Minor
>             Fix For: 3.0.0, 2.3.0, 1.4.11, 1.5.1
>
>         Attachments: HBASE-23056-branch-1.0001.patch, 
> HBASE-23056.master.0001.patch, 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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