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https://issues.apache.org/jira/browse/HADOOP-13783?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15627043#comment-15627043
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NITIN VERMA commented on HADOOP-13783:
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Thanks [~liuml07]
> Improve efficiency of WASB over page blobs
> ------------------------------------------
>
> Key: HADOOP-13783
> URL: https://issues.apache.org/jira/browse/HADOOP-13783
> Project: Hadoop Common
> Issue Type: Bug
> Components: azure
> Reporter: NITIN VERMA
> Assignee: NITIN VERMA
>
> 1) Add telemetry to WASB driver. WASB driver is lack of any log or
> telemetry which makes trouble shoot very difficult. For example, we don’t
> know where is high e2e latency between HBase and Azure storage came from when
> Azure storage server latency was very low. Also we don’t know why WASB can
> only do 166 IOPs which is way below azure storage 500 IOPs. And we had
> several incidents before related to storage latency, because of lacking logs,
> we couldn’t find the ownership of the incident quickly.
> 2) Resolving the hot spotting issue when WASB driver partition the azure
> page blobs by changing the key. Current key design is causing the hot
> spotting on azure storage.
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