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https://issues.apache.org/jira/browse/DRILL-7203?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16837954#comment-16837954
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ASF GitHub Bot commented on DRILL-7203:
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kkhatua commented on pull request #1787: DRILL-7203: Back button not working
URL: https://github.com/apache/drill/pull/1787
The root cause of this bug is that when a form is submitted, Drill uses the
POST mechanism via an AJAX call. The response is then used to swap the existing
`/query` page's DOM. This means that the browser history does not capture the
change because the URL has never changed. As a result, when the user hits the
`[BACK]` button, the call is made to the browser which redirects to the last
page visited just before `/query`.
Changing the AJAX call mechanism is risky, so the workaround was to leverage
the `sessionStorage` feature supported by most modern (and secure) browsers.
When a query is submitted, `sessionStorage` is used to cache the submitted
query (like a session/cookie). If the back button on the page is hit, an
additional flag is set, telling the Javascript to revisit the submission page
and use the _cached_ query. If the submission page is revisited via any other
mechanism, it is assumed that the `[BACK]` button was not pressed (since the
additional flag is not set), and the cached query is cleared from the browser
memory.
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> Back button for failed query does not return on Query page
> -----------------------------------------------------------
>
> Key: DRILL-7203
> URL: https://issues.apache.org/jira/browse/DRILL-7203
> Project: Apache Drill
> Issue Type: Bug
> Affects Versions: 1.16.0
> Reporter: Arina Ielchiieva
> Assignee: Kunal Khatua
> Priority: Major
> Fix For: 1.17.0
>
> Attachments: back_button.JPG
>
>
> Back button for failed query returns on previous page before Query page but
> not on the Query page.
> Steps:
> 1. go to Logs page
> 2. go to Query page
> 3. execute query with incorrect syntax (ex: xxxxx)
> 4. error message will be displayed, Back button will be in left corner
> (screenshot attached)
> 5. press Back button
> 6. user is redirected to Logs page
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