Hello Kathey.
"Using the org.apache.derby.jdbc.ClientDriver driver to access the
Derby database through network, sending a large amount of parameter
data with setBinaryStream will cause Network Server to throw an
OutOfMemoryException.
I'm not sure why you used the words "sending a large amount of " in
upper text ....
This words makes me think that there are problem of inefficient
communication between server and client ...
Is this just a misunderstanding ?
Or there exists that kind of problem in communication between server and
client ?
Best regards.
Kathey Marsden wrote:
Tomohito Nakayama (JIRA) wrote:
[
http://issues.apache.org/jira/browse/DERBY-550?page=comments#action_12419714
]
Tomohito Nakayama commented on DERBY-550:
-----------------------------------------
I intended to resolve this issue as "Cannot Reproduce" as next url.
http://issues.apache.org/jira/browse/DERBY-1472#action_12419712
However, I reconsidered.
I won't resolve DERBY-550, "BLOB : java.lang.OutOfMemoryError with
network JDBC driver (org.apache.derby.jdbc.ClientDriver)",
because it seems to be true that OutOfMemoryError happens "in server
side".
Title of DERBY-550 does not say that Error happens in client side.
Then, this issue is not mistaken completely.
Description of the issue "writting all the file into memory (RAM)
before sending ", is mistaken.
Sorry for my own propagation of confusion over this issue. When
filing DERBY-326 and seeing similar code in the client I suspected
there might be streaming issues in the client as well. I then took
DERBY-550 as confirmation of that when I saw it filed against the
client and described in this way.
In addition to changing the component to Network Server, changing the
DERBY-550 description as follows might clarify things sufficiently.
from
"Using the org.apache.derby.jdbc.ClientDriver driver to access the
Derby database through network, the driver is writting all the file
into memory (RAM) before sending
it to the database. "
to more of a a description of the functional problem:
"Using the org.apache.derby.jdbc.ClientDriver driver to access the
Derby database through network, sending a large amount of parameter
data with setBinaryStream will cause Network Server to throw an
OutOfMemoryException.
I am not sure if setCharacterStream is also at issue. If so it could
be filed as a separate issue.
Kathey
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