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https://issues.apache.org/jira/browse/HDDS-816?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16687477#comment-16687477
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Bharat Viswanadham commented on HDDS-816:
-----------------------------------------
Hi [~linyiqun]
Thanks for the review.
{quote}Another problem for the key count metric: At the first time, there is no
key count metric file, how to initialize the key metric value? I didn't see
this logic.
{quote}
This is done in the start() of ozone manager. For the first time when om
starts, we will not have the ommetrics file, after next restart we will have
the file.
OzoneManager.java L556
{code:java}
if (getMetricsStorageFile().exists()) {
OmMetricsInfo metricsInfo = READER.readValue(getMetricsStorageFile());
metrics.setNumKeys(metricsInfo.getNumKeys());
}{code}
> Create OM metrics for bucket, volume, keys
> ------------------------------------------
>
> Key: HDDS-816
> URL: https://issues.apache.org/jira/browse/HDDS-816
> Project: Hadoop Distributed Data Store
> Issue Type: Bug
> Components: Ozone Manager
> Reporter: Bharat Viswanadham
> Assignee: Bharat Viswanadham
> Priority: Major
> Attachments: HDDS-816.00.patch, HDDS-816.01.patch, Metrics for number
> of volumes, buckets, keys.pdf, Proposed Approach.pdf
>
>
> This Jira is used to create the following metrics in Ozone manager.
> # number of volumes
> # number of buckets
> # number of keys
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