Memory leak with ndb.put_multi

[Attila-Mihaly Balazs]

I posted a bug with this already (including a sample application to reproduce it) here: https://code.google.com/p/googleappengine/issues/detail?id=13485

I'm just re-posting it here so that people are aware:

It seems that ndb.put_multi has a serious memory leak when using large (1000) batches of heterogeneous entries which makes it unsuitable for batch-load tasks (ie. I want to load 1m entries in the datastore). The workarounds I found are:

- only use it with homogeneous entities
- use smaller batch size (100)

Hope that this gets resolved soon.

[Jordan (Cloud Platform Support)]

Thank you for reporting this issue. All further progress will occur within the PIT.