Uploaded image for project: 'Qt'
  1. Qt
  2. QTBUG-75549

Flaky results of QFtp when testing in Coin network

    XMLWordPrintable

Details

    • Bug
    • Resolution: Done
    • P2: Important
    • None
    • 5.14.0
    • Network: FTP
    • None

    Description

      After migrating QFtp test to docker server, it becomes easier to hit "QTestEventLoop::instance().timeout()" during the test. The test seems to be inherently flaky and sensitive to timing.

      To debug this issue, I turned on the debug flag (DUMP_SIGNALS) and extended the time of QTestEventLoop::enterLoop to 2 minutes. As shown in the log, the test kept waiting for the "commandFinished" response to QFtp::ConnectToHost command.

      https://testresults.qt.io/coin/integration/qt/qtbase/tasks/web_rescheduled_qt_qtbase_1556804652830

      https://codereview.qt-project.org/#/c/258132/15

      agent:2019/05/02 15:02:25 build.go:197: QDEBUG : tst_QFtp::get(WithSocks5ProxyAndSession:nonExist01_1) [ 0.742 D] default tst_QFtp::commandStarted - 231:commandStarted( 231 )
 agent:2019/05/02 15:02:25 build.go:197: QDEBUG : tst_QFtp::get(WithSocks5ProxyAndSession:nonExist01_1) [ 0.742 D] default tst_QFtp::stateChanged - 231: stateChanged( 1 )
 agent:2019/05/02 15:02:25 build.go:197: QDEBUG : tst_QFtp::get(WithSocks5ProxyAndSession:nonExist01_1) [ 0.747 D] default tst_QFtp::stateChanged - 231: stateChanged( 3 )
 agent:2019/05/02 15:04:26 build.go:197: FAIL! : tst_QFtp::get(WithSocks5ProxyAndSession:nonExist01_1) Network operation timed out on vsftpd.test-net.qt.local:21
 agent:2019/05/02 15:04:26 build.go:197: Loc: [tst_qftp.cpp(691)]

      Attachments

        Issue Links

          relates to

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-76367 flaky tests in tst_qftp

          • P1: Critical - Urgent and Important, will STOP the release if matched with set FixVersion field. This includes regressions from the last version that are not edge cases; Data loss; Build issues; All but the most unlikely crashes/lockups/hanging; Serious usability issues and embarrassing bugs & Bugs critical to a deliverable. This is the highest possible priority for requirements.
          • Closed
          No reviews matched the request. Check your Options in the drop-down menu of this sections header.

          Activity

            People

              ryan_chu Ryan Chu
              ryan_chu Ryan Chu
              Votes:
              0 Vote for this issue
              Watchers:
              2 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved:

                Gerrit Reviews

                  There are no open Gerrit changes