Re: Re: Server side cursor limitations for on demand loading of data in query tool [RM2137] [pgAdmin4]

public inbox for [email protected]  
help / color / mirror / Atom feed

From: Dave Page <[email protected]>
To: Harshal Dhumal <[email protected]>
Cc: Harshal Dhumal <[email protected]>
Cc: Ashesh Vashi <[email protected]>
Cc: pgadmin-hackers <[email protected]>
Subject: Re: Re: Server side cursor limitations for on demand loading of data in query tool [RM2137] [pgAdmin4]
Date: Thu, 15 Jun 2017 21:55:15 +0100
Message-ID: <CA+OCxox=8+nnQOAARWVRaxvBYBAG1sFyV1fWT-whPhdqVoJMmQ@mail.gmail.com> (raw)
In-Reply-To: <CAFiP3vy3rUMT+t6FBoNZftWf1ATth09t6+_GW_+qiBvsfFr4FQ@mail.gmail.com>
References: <CAFiP3vxaM9ixpmaM04JAkTT1ONwmnMPwUCbK+kzCN+r6F+7-ZA@mail.gmail.com>
	<CA+OCxozb7qDTiskHXv08G5TrCi7zmhR7Csz=x9V4ermehyO8cg@mail.gmail.com>
	<CAFiP3vzas6ez9u-snfCuXzb1eL6_aZwAfrb+561sq8V19PT4Eg@mail.gmail.com>
	<CA+OCxoy-8RyH-QYxXkLn1KSTUJMArev0ukKpfJx+yvATEyJV+Q@mail.gmail.com>
	<CAFiP3vz6_Up4OfSAR4J8C35EzgdApbAiZCeZzzCKxnjwgJMdYQ@mail.gmail.com>
	<CAGRPzo_KmDF=ThGC9hy6JepsxBn23nuXkamJBQgT6eOFh0p1pg@mail.gmail.com>
	<CAFiP3vwYLTLXX5EFPzE_s-0ucQikDERp_iS+4Neb1JN-sHfG9A@mail.gmail.com>
	<CAFiP3vxvFMHv=yEOXcbxi9YABtTwOk3Feci92YMA4_9Fcp-4mA@mail.gmail.com>
	<CAFiP3vzj2HBjau+N5TN+Asb_7DW6zgmPrzJf0rmd_H0NJ3Sttg@mail.gmail.com>
	<CAE+jjamhZ27XJ2ZHGRgpsL0yUUOawDhiMXoxfB-bRCu=M8RBhg@mail.gmail.com>
	<CAFiP3vw=rGTY1BFPB2ZLjLBehEaPpXgXRY2SerK+07TrA+nxzA@mail.gmail.com>
	<CA+OCxozQj0gy7dsorij5fXSgLuhGDJP7uC4++VviAPR1XFs-Fw@mail.gmail.com>
	<CAFiP3vyjbmQN2bRpHJvNXFnK6YvtgPm12OiF_Oa2Z7J73=C3Ag@mail.gmail.com>
	<CAFiP3vzomo+37TZ87tVr4AsmUNzzsFQkq8j8fEXNKdpVj9bOxw@mail.gmail.com>
	<CAFiP3vz1EGT4cgv3XJNT6wLDz0Ca7dT_W0p6GsDVPua+tWZrpw@mail.gmail.com>
	<CA+OCxoxyAD1x_bEhzPS0RGU1SuL8Lfhx39ME7wY=L28ep4PdvQ@mail.gmail.com>
	<CAG7mmoxASRd2wTahma6WNLCLfg=4gy5eOQ+e5K0ioOHPUS+7bA@mail.gmail.com>
	<CAE29nRn0Z7v4oOWWndLr1Cr8HRwHizBK3+7BK12KnT0uHHHi7Q@mail.gmail.com>
	<CAFiP3vxEra_mZGc8ZMJ+zNOpNb+LRGT7LobYktFgTetVMktmsw@mail.gmail.com>
	<CA+OCxoz=hJpzbca9kwMesf+K2axYLaa_s7bThmnQh2WQHL0SmQ@mail.gmail.com>
	<CAFiP3vzQQ8MxzSGuYcOPR9cDRRdz06LuLuGKo3cnTWXNcgFrew@mail.gmail.com>
	<CA+OCxoy=+A0xE2gaFTH0VkAF-f4dpkW4nvF8sLd7Guag3czorA@mail.gmail.com>
	<CAFiP3vy3rUMT+t6FBoNZftWf1ATth09t6+_GW_+qiBvsfFr4FQ@mail.gmail.com>
List-Unsubscribe:  <mailto:[email protected]?body=unsub%20pgadmin-hackers>

Sounds good, thanks.

On Thu, Jun 15, 2017 at 9:54 PM, Harshal Dhumal
<[email protected]> wrote:
> Hi
>
> On Fri, Jun 16, 2017 at 2:07 AM, Dave Page <[email protected]> wrote:
>>
>> Hi
>>
>> On Thu, Jun 15, 2017 at 9:30 PM, Harshal Dhumal
>> <[email protected]> wrote:
>> > Hi Dave,
>> >
>> > Please find attached updated patch.
>> >
>> > On Thu, Jun 15, 2017 at 3:58 PM, Dave Page <[email protected]> wrote:
>> >>
>> >> Hi
>> >>
>> >> On Wed, Jun 14, 2017 at 11:36 PM, Harshal Dhumal
>> >> <[email protected]> wrote:
>> >>>
>> >>> Hi Dave,
>> >>>
>> >>> Please find rebased patch for RM2137.
>> >>
>> >>
>> >> Looking very good. The only issues I see are:
>> >>
>> >> - The row headers should auto-size such that they can display the row
>> >> numbers if the last row was displayed. E.g. if there are 12345 rows in
>> >> total, then the row header should be sized to display 5 digits.
>> >>
>> > Fixed.
>> >
>> >
>> >>
>> >> - The tests are comprehensive, which is awesome. However, every time I
>> >> ran
>> >> them, at least one of the feature tests failed. Unfortunately, it was a
>> >> different one each time. In the last two runs, I got:
>> >>
>> >>  ======================================================================
>> >> ERROR: runTest
>> >> (pgadmin.feature_tests.query_tool_tests.QueryToolFeatureTest)
>> >> Query tool feature test
>> >> ----------------------------------------------------------------------
>> >> Traceback (most recent call last):
>> >>   File
>> >>
>> >> "/Users/dpage/git/pgadmin4/web/regression/feature_utils/base_feature_test.py",
>> >> line 40, in setUp
>> >>     self.before()
>> >>   File
>> >>
>> >> "/Users/dpage/git/pgadmin4/web/pgadmin/feature_tests/query_tool_tests.py",
>> >> line 40, in before
>> >>     self._connects_to_server()
>> >>   File
>> >>
>> >> "/Users/dpage/git/pgadmin4/web/pgadmin/feature_tests/query_tool_tests.py",
>> >> line 144, in _connects_to_server
>> >>     self.page.driver.find_element_by_link_text("Create"))\
>> >>   File
>> >>
>> >> "/Users/dpage/.virtualenvs/pgadmin4/lib/python2.7/site-packages/selenium/webdriver/remote/webdriver.py",
>> >> line 319, in find_element_by_link_text
>> >>     return self.find_element(by=By.LINK_TEXT, value=link_text)
>> >>   File
>> >>
>> >> "/Users/dpage/.virtualenvs/pgadmin4/lib/python2.7/site-packages/selenium/webdriver/remote/webdriver.py",
>> >> line 756, in find_element
>> >>     'value': value})['value']
>> >>   File
>> >>
>> >> "/Users/dpage/.virtualenvs/pgadmin4/lib/python2.7/site-packages/selenium/webdriver/remote/webdriver.py",
>> >> line 238, in execute
>> >>     self.error_handler.check_response(response)
>> >>   File
>> >>
>> >> "/Users/dpage/.virtualenvs/pgadmin4/lib/python2.7/site-packages/selenium/webdriver/remote/errorhandler.py",
>> >> line 193, in check_response
>> >>     raise exception_class(message, screen, stacktrace)
>> >> NoSuchElementException: Message: no such element: Unable to locate
>> >> element: {"method":"link text","selector":"Create"}
>> >>   (Session info: chrome=58.0.3029.110)
>> >>   (Driver info: chromedriver=2.29.461585
>> >> (0be2cd95f834e9ee7c46bcc7cf405b483f5ae83b),platform=Mac OS X 10.12.3
>> >> x86_64)
>> >>
>> > I checked code from _connects_to_server function which is common in all
>> > features test cases. I didn't find anything wrong with this. If there is
>> > a
>> > bug in this function then all feature test must fail.
>> > Let me know if you are getting failure consistently in
>> > _connects_to_server
>> > function.
>>
>> I wondered if that one is a race condition. Do we need a short delay
>> before clicking the Object menu? I have seen this occasionally before.
>
>
> OK. In that case let's try putting 1-2 second delay and observer behaviour.
> I'll send separate patch for this tomorrow as this is not related to on
> demand query result feature or its test cases.
>
>>
>>
>> >>
>> >>
>> >> ======================================================================
>> >> ERROR: runTest
>> >> (pgadmin.feature_tests.query_tool_tests.QueryToolFeatureTest)
>> >> Query tool feature test
>> >> ----------------------------------------------------------------------
>> >> Traceback (most recent call last):
>> >>   File
>> >>
>> >> "/Users/dpage/git/pgadmin4/web/pgadmin/feature_tests/query_tool_tests.py",
>> >> line 119, in runTest
>> >>     self._query_tool_auto_rollback_enabled()
>> >>   File
>> >>
>> >> "/Users/dpage/git/pgadmin4/web/pgadmin/feature_tests/query_tool_tests.py",
>> >> line 697, in _query_tool_auto_rollback_enabled
>> >>     '//div[contains(@class, "sql-editor-message") and
>> >> contains(string(),
>> >> "COMMIT")]'
>> >>   File
>> >>
>> >> "/Users/dpage/.virtualenvs/pgadmin4/lib/python2.7/site-packages/selenium/webdriver/remote/webdriver.py",
>> >> line 295, in find_element_by_xpath
>> >>     return self.find_element(by=By.XPATH, value=xpath)
>> >>   File
>> >>
>> >> "/Users/dpage/.virtualenvs/pgadmin4/lib/python2.7/site-packages/selenium/webdriver/remote/webdriver.py",
>> >> line 756, in find_element
>> >>     'value': value})['value']
>> >>   File
>> >>
>> >> "/Users/dpage/.virtualenvs/pgadmin4/lib/python2.7/site-packages/selenium/webdriver/remote/webdriver.py",
>> >> line 238, in execute
>> >>     self.error_handler.check_response(response)
>> >>   File
>> >>
>> >> "/Users/dpage/.virtualenvs/pgadmin4/lib/python2.7/site-packages/selenium/webdriver/remote/errorhandler.py",
>> >> line 193, in check_response
>> >>     raise exception_class(message, screen, stacktrace)
>> >> NoSuchElementException: Message: no such element: Unable to locate
>> >> element: {"method":"xpath","selector":"//div[contains(@class,
>> >> "sql-editor-message") and contains(string(), "COMMIT")]"}
>> >>   (Session info: chrome=58.0.3029.110)
>> >>   (Driver info: chromedriver=2.29.461585
>> >> (0be2cd95f834e9ee7c46bcc7cf405b483f5ae83b),platform=Mac OS X 10.12.3
>> >> x86_64)
>> >>
>> > I have updated Auto rollback enabled test in this patch.
>> >
>> >>
>> >> Relevant screenshots attached.
>> >>
>> >> - Can you tidy up the regression output a little please? Instead of:
>> >>
>> >> -------
>> >> runTest (pgadmin.feature_tests.query_tool_tests.QueryToolFeatureTest)
>> >> Query tool feature test ... On demand result set on scrolling...
>> >> OK.
>> >>
>> >> On demand result set on grid select all...
>> >> OK.
>> >>
>> >> On demand result set on column select all...
>> >> OK.
>> >>
>> >> Explain query...
>> >> OK.
>> >>
>> >> Explain query with verbose...
>> >> OK.
>> >>
>> >> Explain query with costs...
>> >> OK.
>> >>
>> >> Explain analyze query...
>> >> OK.
>> >>
>> >> Explain analyze query with buffers...
>> >> OK.
>> >>
>> >> Explain analyze query with timing...
>> >> OK.
>> >>
>> >> Auto commit disabled...
>> >> OK.
>> >>
>> >> Auto commit enabled...
>> >> OK.
>> >>
>> >> Auto rollback enabled...
>> >> ERROR
>> >> -------
>> >>
>> >> Something like:
>> >>
>> >> -------
>> >> runTest (pgadmin.feature_tests.query_tool_tests.QueryToolFeatureTest)
>> >> Query tool feature test ...
>> >> On demand result set on scrolling... OK.
>> >> On demand result set on grid select all... OK.
>> >> On demand result set on column select all... OK.
>> >> Explain query... OK.
>> >> Explain query with verbose... OK.
>> >> Explain query with costs... OK.
>> >> Explain analyze query... OK.
>> >> Explain analyze query with buffers... OK.
>> >> Explain analyze query with timing... OK.
>> >> Auto commit disabled... OK.
>> >> Auto commit enabled... OK.
>> >> Auto rollback enabled... ERROR
>> >> --------
>> >>
>> > Fixed.
>> >
>> >
>> >>
>> >> Thanks!
>> >>
>> >> --
>> >> Dave Page
>> >> Blog: http://pgsnake.blogspot.com
>> >> Twitter: @pgsnake
>> >>
>> >> EnterpriseDB UK: http://www.enterprisedb.com
>> >> The Enterprise PostgreSQL Company
>> >
>> >
>>
>>
>>
>> --
>> Dave Page
>> Blog: http://pgsnake.blogspot.com
>> Twitter: @pgsnake
>>
>> EnterpriseDB UK: http://www.enterprisedb.com
>> The Enterprise PostgreSQL Company
>
>



-- 
Dave Page
Blog: http://pgsnake.blogspot.com
Twitter: @pgsnake

EnterpriseDB UK: http://www.enterprisedb.com
The Enterprise PostgreSQL Company


-- 
Sent via pgadmin-hackers mailing list ([email protected])
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgadmin-hackers

view thread (24+ messages)  latest in thread

reply

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Reply to all the recipients using the --to and --cc options:
  reply via email

  To: [email protected]
  Cc: [email protected], [email protected], [email protected], [email protected]
  Subject: Re: Re: Server side cursor limitations for on demand loading of data in query tool [RM2137] [pgAdmin4]
  In-Reply-To: <CA+OCxox=8+nnQOAARWVRaxvBYBAG1sFyV1fWT-whPhdqVoJMmQ@mail.gmail.com>

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

This inbox is served by agora; see mirroring instructions
for how to clone and mirror all data and code used for this inbox