Last item in batch always hangs

Fishbowler · 07-26-2010, 08:00 AM

Good afternoon all from a long-time lurker, first-time poster.

I'm slowly building up my calibre library as me & my partner are spending more time reading on our Android phones than paper books.

A few quick speed tests on FBReader and the like show epub to be a quicker format for the apps to open than others, e.g. fb2. Whilst I've been adding the books and sorting the metadata and tags, I've been converting batches over to epub.

I don't think this was always the case, but recently it seems that the last job in any batch always hangs. That is to say, if I convert one book, it'll reach 100%, but never complete, and never flush the file to disk. If I convert 30 books, 29 will work perfectly, but the 30th will hang at 100%.

I've tested the book individually with ebook-convert MyBook.pdf MyBook.epub, and all works as expected, so I suspect it's the app rather than the book. If it's relevant, all of my recent attempts have been pdf -> epub.

Anyone seen this kind of behaviour before? Anyone got any kind of curative?

If it helps, I'm using v0.7.10 on Ubuntu Lucid, and despite searching, have no idea where the log file is...

itimpi · 07-26-2010, 09:06 AM

I have not seen this behaviour - but I am running on Windows so that may be the difference.

To get the log for a job, you click the Jobs icon at the bottom right of the Calibre window to bring up the Jobs window, and then click on a specific job to see its log. As far as I know the log is only in memory, and not stored to disk (although I could be wrong about that).

Fishbowler · 07-26-2010, 05:40 PM

The log for the PDF -> EPUB is blank, despite the progress bar flashing through the various stages.

I've confirmed it does something similar for a mass conversion to FB2, this time with log cycling through 1209 sequential messages about converting CSS msostyles. I sensibly copied the text to the clipboard. Then promptly restarted the machine and booted into Windows. Oops.

I've also confirmed your own observation - the same books with the same operation in the same version of calibre don't error under Windows. PDF -> EPUB is a-okay under Win7 (using Unison to keep everything tidy).

Any thoughts as to what mught be tying up the last job, only under Linux?

kovidgoyal · 07-26-2010, 07:11 PM

How did you install calibre on linux?

Clancy_s · 07-26-2010, 08:42 PM

pmji

Running Calibre, installed by running the code on the Calibre site on 64 Bit Ubuntu 10.04:

I've had this happen to me fairly often but not every time, under Calibre in the early 0.7s.

Usually with batch converts > 5 items, .lit to .epub.

I didn't have that many old files to convert so I didn't bother reporting it, I've not had occasion to try it since 0.7.8.

Fishbowler · 07-27-2010, 02:27 AM

Installed / updated every time via the python CLI installer - the repo version is still at 0.6.42.

kovidgoyal · 07-27-2010, 10:12 AM

Sounds like an IPC problem. Try running calibre as

calibre-debug -g

from a terminal, run a job and post the output

Fishbowler · 07-29-2010, 02:16 AM

I now seem unable to replicate this on either Linux box, whereas previously I could replicate it on either. No calibre updates have occurred in that time, but they're both Ubuntu so maybe a package update to something else has fixed it?

Suffice it to say I've converted everything into epub for now, and will report back should the problem re-occur.

Thanks for your help

07-26-2010, 08:00 AM	#1
Fishbowler Junior Member Posts: 8 Karma: 10 Join Date: Jul 2010 Device: Android (HTC Hero)	Last item in batch always hangs Good afternoon all from a long-time lurker, first-time poster. I'm slowly building up my calibre library as me & my partner are spending more time reading on our Android phones than paper books. A few quick speed tests on FBReader and the like show epub to be a quicker format for the apps to open than others, e.g. fb2. Whilst I've been adding the books and sorting the metadata and tags, I've been converting batches over to epub. I don't think this was always the case, but recently it seems that the last job in any batch always hangs. That is to say, if I convert one book, it'll reach 100%, but never complete, and never flush the file to disk. If I convert 30 books, 29 will work perfectly, but the 30th will hang at 100%. I've tested the book individually with ebook-convert MyBook.pdf MyBook.epub, and all works as expected, so I suspect it's the app rather than the book. If it's relevant, all of my recent attempts have been pdf -> epub. Anyone seen this kind of behaviour before? Anyone got any kind of curative? If it helps, I'm using v0.7.10 on Ubuntu Lucid, and despite searching, have no idea where the log file is...

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07-26-2010, 09:06 AM	#2
itimpi Wizard Posts: 4,552 Karma: 950151 Join Date: Nov 2008 Device: Sony PRS-950, iphone/ipad (Marvin/iBooks/QuickReader)	I have not seen this behaviour - but I am running on Windows so that may be the difference. To get the log for a job, you click the Jobs icon at the bottom right of the Calibre window to bring up the Jobs window, and then click on a specific job to see its log. As far as I know the log is only in memory, and not stored to disk (although I could be wrong about that).

07-26-2010, 05:40 PM	#3
Fishbowler Junior Member Posts: 8 Karma: 10 Join Date: Jul 2010 Device: Android (HTC Hero)	The log for the PDF -> EPUB is blank, despite the progress bar flashing through the various stages. I've confirmed it does something similar for a mass conversion to FB2, this time with log cycling through 1209 sequential messages about converting CSS msostyles. I sensibly copied the text to the clipboard. Then promptly restarted the machine and booted into Windows. Oops. I've also confirmed your own observation - the same books with the same operation in the same version of calibre don't error under Windows. PDF -> EPUB is a-okay under Win7 (using Unison to keep everything tidy). Any thoughts as to what mught be tying up the last job, only under Linux?

07-26-2010, 07:11 PM	#4
kovidgoyal creator of calibre Posts: 43,871 Karma: 22666666 Join Date: Oct 2006 Location: Mumbai, India Device: Various	How did you install calibre on linux?

07-26-2010, 08:42 PM	#5
Clancy_s Zealot Posts: 133 Karma: 1010308 Join Date: Jan 2010 Location: Newcastle, NSW Device: Kobo Glo HD	pmji Running Calibre, installed by running the code on the Calibre site on 64 Bit Ubuntu 10.04: I've had this happen to me fairly often but not every time, under Calibre in the early 0.7s. Usually with batch converts > 5 items, .lit to .epub. I didn't have that many old files to convert so I didn't bother reporting it, I've not had occasion to try it since 0.7.8.

07-27-2010, 02:27 AM	#6
Fishbowler Junior Member Posts: 8 Karma: 10 Join Date: Jul 2010 Device: Android (HTC Hero)	Installed / updated every time via the python CLI installer - the repo version is still at 0.6.42.

07-27-2010, 10:12 AM	#7
kovidgoyal creator of calibre Posts: 43,871 Karma: 22666666 Join Date: Oct 2006 Location: Mumbai, India Device: Various	Sounds like an IPC problem. Try running calibre as calibre-debug -g from a terminal, run a job and post the output

07-29-2010, 02:16 AM	#8
Fishbowler Junior Member Posts: 8 Karma: 10 Join Date: Jul 2010 Device: Android (HTC Hero)	I now seem unable to replicate this on either Linux box, whereas previously I could replicate it on either. No calibre updates have occurred in that time, but they're both Ubuntu so maybe a package update to something else has fixed it? Suffice it to say I've converted everything into epub for now, and will report back should the problem re-occur. Thanks for your help

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