Blobs: Packing blocks ZEO entirely

[Christian Zagrodnick]

It seems that packing blocks the ZEO server completly when blobs are enabled.

I don't really understand why since I don't understand how a normal pack would not block.

[Jim Fulton (jim-zope)]

On Jul 23, 2008, at 2:44 AM, Christian Zagrodnick wrote:

> Public bug reported:
>
> It seems that packing blocks the ZEO server completly when blobs are
> enabled.
>
> I don't really understand why since I don't understand how a normal
> pack
> would not block.

Packing is performed in a separate thread. Perhaps the blob handling
is misusing a lock.

Jim

--
Jim Fulton
Zope Corporation

[Christian Theune (ctheune)]

Yes. The packing has been using the lock the wrong way since it was initially written, very likely to my misunderstanding of that lock at the time.

FileStorage only uses the storage lock during pack time to protect the '_pack_is_in_progress' attribute, not the whole packing process.

I'll adapt the BlobStorage's pack method accordingly.

[Christian Zagrodnick (zagy)]

was released with 3.8.1