Abhishek Pal created HDDS-12025:
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Summary: [UI] Disk Usage page will fail to load if there is not
path response from backend
Key: HDDS-12025
URL: https://issues.apache.org/jira/browse/HDDS-12025
Project: Apache Ozone
Issue Type: Bug
Components: Ozone Recon
Affects Versions: 2.0.0
Reporter: Abhishek Pal
When we load the disk usage page, it is expected that all the metadata has
already been processed by Recon.
However in the edge-case where Recon was just freshly installed and we directly
access the Disk Usage page, it will give an error/exception as there is no path
value (i.e undefined)
This can be reproduced by building Ozone, running it via docker and then
immediately accessing *localhost:9888/#/DiskUsage* as soon as Recon comes up.
This error will be thrown
[here|https://github.com/devabhishekpal/ozone/blob/8f2689dfe5f9b79e64f7d78acbaaf300c1ccbd1c/hadoop-ozone/recon/src/main/resources/webapps/recon/ozone-recon-web/src/v2/components/plots/duPieChart.tsx#L99]
and
[here|https://github.com/devabhishekpal/ozone/blob/8f2689dfe5f9b79e64f7d78acbaaf300c1ccbd1c/hadoop-ozone/recon/src/main/resources/webapps/recon/ozone-recon-web/src/v2/components/plots/duPieChart.tsx#L105]
We should wrap the above path references in nullish coalescing operator (*??*)
and provide an empty string as a fallback for the 'path' property in case it is
undefined so that the split() method isn't invoked on undefined.
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