擅长:python、mysql、java
<p>此问题可能会对您的问题有所启示:<a href="https://code.google.com/p/googleappengine/issues/detail?id=4432" rel="noreferrer">https://code.google.com/p/googleappengine/issues/detail?id=4432</a></p>
<blockquote>
<p>Even though offline requests can currently live up to 10 minutes (and
background instances can live forever) datastore queries can still
only live for 30 seconds. We plan to improve this, but since a
'consistent' view of the data is only preserved for a limit period of
time, there is an upper bound to how long a query can last (which is <
10 minutes).</p>
</blockquote>
<p>。。。在</p>
<blockquote>
<p>Instead of running a single long query, consider fetching batches from
the query using query cursors.</p>
</blockquote>