[jira] [Commented] (COUCHDB-326) Occasional {"error":"error","reason":"eacces"} errors deleting a database on Windows
[
https://issues.apache.org/jira/browse/COUCHDB-326?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13155769#comment-13155769
]
James Howe commented on COUCHDB-326:
Anti-Virus
> Occasional {"error":"error","reason":"eacces"} errors deleting a database on
> Windows
>
>
> Key: COUCHDB-326
> URL: https://issues.apache.org/jira/browse/COUCHDB-326
> Project: CouchDB
> Issue Type: Bug
>Affects Versions: 0.9
> Environment: Windows, couch 0.9, erlang R12B 5.6.5
>Reporter: Mark Hammond
>
> On Windows, occasionally you will see errors attempting to delete a database.
> This manifests itself by 10-30% of the test suite failing on Windows. If
> you retry the tests that failed, they will usually pass on subsequent
> attempts. Running the tests individually causes them to fail roughly 10% of
> the time.
> The log output shown is:
> [debug] [<0.18650.6>] httpd 500 error response:
>{"error":"error","reason":"eacces"}
> [info] [<0.18650.6>] 127.0.0.1 - - 'DELETE' /test_suite_db/ 500
> A slightly snipped transcript from IRC:
> (2:58:32 PM) markh: I see a number of INFO logs "Shutting down view group
> server, monitored db is closing." directly before the error. I was guessing
> the file may be unlink'd before one of those workers actually closes its
> handle?
> (2:58:54 PM) alisdair: yeah, it's probably a race condition
> (2:59:13 PM) alisdair: where the delete is tried before the fd is let go
> (2:59:26 PM) alisdair: the reader fd that is
> (2:59:32 PM) markh: yeah
> ...
> (3:11:47 PM) alisdair: i can't find an obvious deadlock
> (3:12:18 PM) alisdair: couch_server:delete explicitly waits for the db
> process to exit
> (3:12:23 PM) alisdair: before deleting it
> (3:15:15 PM) alisdair: i think i found the problem
> (3:15:23 PM) alisdair: but i need a windows machine to confirm
> (3:15:30 PM) alisdair: i'll look into it tomorrow
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[jira] [Commented] (COUCHDB-326) Occasional {"error":"error","reason":"eacces"} errors deleting a database on Windows
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Paul Joseph Davis commented on COUCHDB-326:
---
@Dave
Why would an audio/visual program be interfering with CouchDB's data
directories?
> Occasional {"error":"error","reason":"eacces"} errors deleting a database on
> Windows
>
>
> Key: COUCHDB-326
> URL: https://issues.apache.org/jira/browse/COUCHDB-326
> Project: CouchDB
> Issue Type: Bug
>Affects Versions: 0.9
> Environment: Windows, couch 0.9, erlang R12B 5.6.5
>Reporter: Mark Hammond
>
> On Windows, occasionally you will see errors attempting to delete a database.
> This manifests itself by 10-30% of the test suite failing on Windows. If
> you retry the tests that failed, they will usually pass on subsequent
> attempts. Running the tests individually causes them to fail roughly 10% of
> the time.
> The log output shown is:
> [debug] [<0.18650.6>] httpd 500 error response:
>{"error":"error","reason":"eacces"}
> [info] [<0.18650.6>] 127.0.0.1 - - 'DELETE' /test_suite_db/ 500
> A slightly snipped transcript from IRC:
> (2:58:32 PM) markh: I see a number of INFO logs "Shutting down view group
> server, monitored db is closing." directly before the error. I was guessing
> the file may be unlink'd before one of those workers actually closes its
> handle?
> (2:58:54 PM) alisdair: yeah, it's probably a race condition
> (2:59:13 PM) alisdair: where the delete is tried before the fd is let go
> (2:59:26 PM) alisdair: the reader fd that is
> (2:59:32 PM) markh: yeah
> ...
> (3:11:47 PM) alisdair: i can't find an obvious deadlock
> (3:12:18 PM) alisdair: couch_server:delete explicitly waits for the db
> process to exit
> (3:12:23 PM) alisdair: before deleting it
> (3:15:15 PM) alisdair: i think i found the problem
> (3:15:23 PM) alisdair: but i need a windows machine to confirm
> (3:15:30 PM) alisdair: i'll look into it tomorrow
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[jira] [Commented] (COUCHDB-326) Occasional {"error":"error","reason":"eacces"} errors deleting a database on Windows
[
https://issues.apache.org/jira/browse/COUCHDB-326?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13155567#comment-13155567
]
Dave Cottlehuber commented on COUCHDB-326:
--
Resolved since quite a while I believe. I've not seen any errors in the test
suite for this since 1.0, and cannot repro on current 1.1.1.
Running these in parallel shells on CouchDB 1.1.1 produces 0 errors, and leaves
behind no dbs, although a fair bit of laptop heat:
dave@akai /tmp % while (( i++ < 5000 )) { curl --silent -X PUT
http://172.16.40.128:5984/db$i ; }
dave@akai /tmp % while (( i++ < 5000 )) { curl --silent -X DELETE
http://172.16.40.128:5984/db$i ; }
Anybody reporting this issue I would strongly advise they ensure that they have
AV programs skipping their var/lib/couch/ just in case.
> Occasional {"error":"error","reason":"eacces"} errors deleting a database on
> Windows
>
>
> Key: COUCHDB-326
> URL: https://issues.apache.org/jira/browse/COUCHDB-326
> Project: CouchDB
> Issue Type: Bug
>Affects Versions: 0.9
> Environment: Windows, couch 0.9, erlang R12B 5.6.5
>Reporter: Mark Hammond
>
> On Windows, occasionally you will see errors attempting to delete a database.
> This manifests itself by 10-30% of the test suite failing on Windows. If
> you retry the tests that failed, they will usually pass on subsequent
> attempts. Running the tests individually causes them to fail roughly 10% of
> the time.
> The log output shown is:
> [debug] [<0.18650.6>] httpd 500 error response:
>{"error":"error","reason":"eacces"}
> [info] [<0.18650.6>] 127.0.0.1 - - 'DELETE' /test_suite_db/ 500
> A slightly snipped transcript from IRC:
> (2:58:32 PM) markh: I see a number of INFO logs "Shutting down view group
> server, monitored db is closing." directly before the error. I was guessing
> the file may be unlink'd before one of those workers actually closes its
> handle?
> (2:58:54 PM) alisdair: yeah, it's probably a race condition
> (2:59:13 PM) alisdair: where the delete is tried before the fd is let go
> (2:59:26 PM) alisdair: the reader fd that is
> (2:59:32 PM) markh: yeah
> ...
> (3:11:47 PM) alisdair: i can't find an obvious deadlock
> (3:12:18 PM) alisdair: couch_server:delete explicitly waits for the db
> process to exit
> (3:12:23 PM) alisdair: before deleting it
> (3:15:15 PM) alisdair: i think i found the problem
> (3:15:23 PM) alisdair: but i need a windows machine to confirm
> (3:15:30 PM) alisdair: i'll look into it tomorrow
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[jira] Commented: (COUCHDB-326) Occasional {"error":"error","reason":"eacces"} errors deleting a database on Windows
[
https://issues.apache.org/jira/browse/COUCHDB-326?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12872152#action_12872152
]
Chris McKee commented on COUCHDB-326:
-
Issues quite well described here
http://osdir.com/ml/couchdb-user/2009-10/msg00185.html
> Occasional {"error":"error","reason":"eacces"} errors deleting a database on
> Windows
>
>
> Key: COUCHDB-326
> URL: https://issues.apache.org/jira/browse/COUCHDB-326
> Project: CouchDB
> Issue Type: Bug
>Affects Versions: 0.9
> Environment: Windows, couch 0.9, erlang R12B 5.6.5
>Reporter: Mark Hammond
>
> On Windows, occasionally you will see errors attempting to delete a database.
> This manifests itself by 10-30% of the test suite failing on Windows. If
> you retry the tests that failed, they will usually pass on subsequent
> attempts. Running the tests individually causes them to fail roughly 10% of
> the time.
> The log output shown is:
> [debug] [<0.18650.6>] httpd 500 error response:
>{"error":"error","reason":"eacces"}
> [info] [<0.18650.6>] 127.0.0.1 - - 'DELETE' /test_suite_db/ 500
> A slightly snipped transcript from IRC:
> (2:58:32 PM) markh: I see a number of INFO logs "Shutting down view group
> server, monitored db is closing." directly before the error. I was guessing
> the file may be unlink'd before one of those workers actually closes its
> handle?
> (2:58:54 PM) alisdair: yeah, it's probably a race condition
> (2:59:13 PM) alisdair: where the delete is tried before the fd is let go
> (2:59:26 PM) alisdair: the reader fd that is
> (2:59:32 PM) markh: yeah
> ...
> (3:11:47 PM) alisdair: i can't find an obvious deadlock
> (3:12:18 PM) alisdair: couch_server:delete explicitly waits for the db
> process to exit
> (3:12:23 PM) alisdair: before deleting it
> (3:15:15 PM) alisdair: i think i found the problem
> (3:15:23 PM) alisdair: but i need a windows machine to confirm
> (3:15:30 PM) alisdair: i'll look into it tomorrow
--
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[jira] Commented: (COUCHDB-326) Occasional {"error":"error","reason":"eacces"} errors deleting a database on Windows
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]
Eric Desgranges commented on COUCHDB-326:
-
I'm running into the same issue with CouchDB 0.11 on WIndows 7. It definitively
looks like a race condition when deleting either databases or documents.
> Occasional {"error":"error","reason":"eacces"} errors deleting a database on
> Windows
>
>
> Key: COUCHDB-326
> URL: https://issues.apache.org/jira/browse/COUCHDB-326
> Project: CouchDB
> Issue Type: Bug
>Affects Versions: 0.9
> Environment: Windows, couch 0.9, erlang R12B 5.6.5
>Reporter: Mark Hammond
>
> On Windows, occasionally you will see errors attempting to delete a database.
> This manifests itself by 10-30% of the test suite failing on Windows. If
> you retry the tests that failed, they will usually pass on subsequent
> attempts. Running the tests individually causes them to fail roughly 10% of
> the time.
> The log output shown is:
> [debug] [<0.18650.6>] httpd 500 error response:
>{"error":"error","reason":"eacces"}
> [info] [<0.18650.6>] 127.0.0.1 - - 'DELETE' /test_suite_db/ 500
> A slightly snipped transcript from IRC:
> (2:58:32 PM) markh: I see a number of INFO logs "Shutting down view group
> server, monitored db is closing." directly before the error. I was guessing
> the file may be unlink'd before one of those workers actually closes its
> handle?
> (2:58:54 PM) alisdair: yeah, it's probably a race condition
> (2:59:13 PM) alisdair: where the delete is tried before the fd is let go
> (2:59:26 PM) alisdair: the reader fd that is
> (2:59:32 PM) markh: yeah
> ...
> (3:11:47 PM) alisdair: i can't find an obvious deadlock
> (3:12:18 PM) alisdair: couch_server:delete explicitly waits for the db
> process to exit
> (3:12:23 PM) alisdair: before deleting it
> (3:15:15 PM) alisdair: i think i found the problem
> (3:15:23 PM) alisdair: but i need a windows machine to confirm
> (3:15:30 PM) alisdair: i'll look into it tomorrow
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[jira] Commented: (COUCHDB-326) Occasional {"error":"error","reason":"eacces"} errors deleting a database on Windows
[
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]
michael h commented on COUCHDB-326:
---
This issue still exists in the windows binary installer version 0.11.0b897093
> Occasional {"error":"error","reason":"eacces"} errors deleting a database on
> Windows
>
>
> Key: COUCHDB-326
> URL: https://issues.apache.org/jira/browse/COUCHDB-326
> Project: CouchDB
> Issue Type: Bug
>Affects Versions: 0.9
> Environment: Windows, couch 0.9, erlang R12B 5.6.5
>Reporter: Mark Hammond
>
> On Windows, occasionally you will see errors attempting to delete a database.
> This manifests itself by 10-30% of the test suite failing on Windows. If
> you retry the tests that failed, they will usually pass on subsequent
> attempts. Running the tests individually causes them to fail roughly 10% of
> the time.
> The log output shown is:
> [debug] [<0.18650.6>] httpd 500 error response:
>{"error":"error","reason":"eacces"}
> [info] [<0.18650.6>] 127.0.0.1 - - 'DELETE' /test_suite_db/ 500
> A slightly snipped transcript from IRC:
> (2:58:32 PM) markh: I see a number of INFO logs "Shutting down view group
> server, monitored db is closing." directly before the error. I was guessing
> the file may be unlink'd before one of those workers actually closes its
> handle?
> (2:58:54 PM) alisdair: yeah, it's probably a race condition
> (2:59:13 PM) alisdair: where the delete is tried before the fd is let go
> (2:59:26 PM) alisdair: the reader fd that is
> (2:59:32 PM) markh: yeah
> ...
> (3:11:47 PM) alisdair: i can't find an obvious deadlock
> (3:12:18 PM) alisdair: couch_server:delete explicitly waits for the db
> process to exit
> (3:12:23 PM) alisdair: before deleting it
> (3:15:15 PM) alisdair: i think i found the problem
> (3:15:23 PM) alisdair: but i need a windows machine to confirm
> (3:15:30 PM) alisdair: i'll look into it tomorrow
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[jira] Commented: (COUCHDB-326) Occasional {"error":"error","reason":"eacces"} errors deleting a database on Windows
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]
Mark Hammond commented on COUCHDB-326:
--
Just got some clarification from damien:
(10:33:56 AM) damienkatz: it waits to get the killed message, but the point
isn't to wait for an orderly shutdown, just to clear the message.
(10:34:16 AM) markh: right - so that receive does do something important...
(10:34:44 AM) damienkatz: yes, if it didn't, the couch_server process would die.
(10:35:08 AM) damienkatz: as it would get the message later and not know where
it came from, so it assumes something bad happened.
> Occasional {"error":"error","reason":"eacces"} errors deleting a database on
> Windows
>
>
> Key: COUCHDB-326
> URL: https://issues.apache.org/jira/browse/COUCHDB-326
> Project: CouchDB
> Issue Type: Bug
>Affects Versions: 0.9
> Environment: Windows, couch 0.9, erlang R12B 5.6.5
>Reporter: Mark Hammond
>
> On Windows, occasionally you will see errors attempting to delete a database.
> This manifests itself by 10-30% of the test suite failing on Windows. If
> you retry the tests that failed, they will usually pass on subsequent
> attempts. Running the tests individually causes them to fail roughly 10% of
> the time.
> The log output shown is:
> [debug] [<0.18650.6>] httpd 500 error response:
>{"error":"error","reason":"eacces"}
> [info] [<0.18650.6>] 127.0.0.1 - - 'DELETE' /test_suite_db/ 500
> A slightly snipped transcript from IRC:
> (2:58:32 PM) markh: I see a number of INFO logs "Shutting down view group
> server, monitored db is closing." directly before the error. I was guessing
> the file may be unlink'd before one of those workers actually closes its
> handle?
> (2:58:54 PM) alisdair: yeah, it's probably a race condition
> (2:59:13 PM) alisdair: where the delete is tried before the fd is let go
> (2:59:26 PM) alisdair: the reader fd that is
> (2:59:32 PM) markh: yeah
> ...
> (3:11:47 PM) alisdair: i can't find an obvious deadlock
> (3:12:18 PM) alisdair: couch_server:delete explicitly waits for the db
> process to exit
> (3:12:23 PM) alisdair: before deleting it
> (3:15:15 PM) alisdair: i think i found the problem
> (3:15:23 PM) alisdair: but i need a windows machine to confirm
> (3:15:30 PM) alisdair: i'll look into it tomorrow
--
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]
alisdair sullivan commented on COUCHDB-326:
---
exit(Pid, kill),
receive {'EXIT', Pid, close} -> ok end,
To achieve a clean shutdown of the db and it's child processes, you need to
send it a signal other than kill and give it a chance to shutdown and cleanup
it's processes. The receive here doesn't do anything as a killed process sends
the 'EXIT' msg immediately upon being killed.
> Occasional {"error":"error","reason":"eacces"} errors deleting a database on
> Windows
>
>
> Key: COUCHDB-326
> URL: https://issues.apache.org/jira/browse/COUCHDB-326
> Project: CouchDB
> Issue Type: Bug
>Affects Versions: 0.9
> Environment: Windows, couch 0.9, erlang R12B 5.6.5
>Reporter: Mark Hammond
>
> On Windows, occasionally you will see errors attempting to delete a database.
> This manifests itself by 10-30% of the test suite failing on Windows. If
> you retry the tests that failed, they will usually pass on subsequent
> attempts. Running the tests individually causes them to fail roughly 10% of
> the time.
> The log output shown is:
> [debug] [<0.18650.6>] httpd 500 error response:
>{"error":"error","reason":"eacces"}
> [info] [<0.18650.6>] 127.0.0.1 - - 'DELETE' /test_suite_db/ 500
> A slightly snipped transcript from IRC:
> (2:58:32 PM) markh: I see a number of INFO logs "Shutting down view group
> server, monitored db is closing." directly before the error. I was guessing
> the file may be unlink'd before one of those workers actually closes its
> handle?
> (2:58:54 PM) alisdair: yeah, it's probably a race condition
> (2:59:13 PM) alisdair: where the delete is tried before the fd is let go
> (2:59:26 PM) alisdair: the reader fd that is
> (2:59:32 PM) markh: yeah
> ...
> (3:11:47 PM) alisdair: i can't find an obvious deadlock
> (3:12:18 PM) alisdair: couch_server:delete explicitly waits for the db
> process to exit
> (3:12:23 PM) alisdair: before deleting it
> (3:15:15 PM) alisdair: i think i found the problem
> (3:15:23 PM) alisdair: but i need a windows machine to confirm
> (3:15:30 PM) alisdair: i'll look into it tomorrow
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