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qc_wrap deadlocks with slow tile databases #27

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plimkilde opened this issue Nov 23, 2018 · 0 comments
Open

qc_wrap deadlocks with slow tile databases #27

plimkilde opened this issue Nov 23, 2018 · 0 comments

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@plimkilde
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qc_wrap appears to be sensitive to the filesystem location of the SQLite tile database used to coordinate processing (for example, it may hang when the database file is placed on a network drive). This is presumably caused by the individual processes simultaneously trying to obtain a lock on the file, which will deadlock with a file on a slow drive.

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