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https://issues.apache.org/jira/browse/HBASE-27764?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17737489#comment-17737489
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chaijunjie commented on HBASE-27764:
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After HBASE-26590，it seems also slow than HBase 1.x
> scan table is slow when enter hbase shell first time
> ----------------------------------------------------
>
> Key: HBASE-27764
> URL: https://issues.apache.org/jira/browse/HBASE-27764
> Project: HBase
> Issue Type: Bug
> Components: Client, shell
> Affects Versions: 2.4.14
> Reporter: chaijunjie
> Priority: Major
>
> When we test HBase 2.4.14 on our cluster...
> I find we scan a table is slow when enter hbase shell first time.
> step like this:
> hbase shell
> scan 'hbase:meta',\{LIMIT=>1}
> the cost time is more than HBase 1.3
> Any one can help compare the two versions(HBase 2.x vs HBase 1.x) in first
> scan process?
> thanks~
>
> -------
> I find the the “Future<Result> f = cs.poll(timeBeforeReplicas,
> TimeUnit.MICROSECONDS);” in
> org.apache.hadoop.hbase.client.RpcRetryingCallerWithReadReplicas#call
> cost above 200+ms
>
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