Mattias W created CASSANDRA-11528:
-------------------------------------

             Summary: Server Crash when select returns more than a few hundred 
rows
                 Key: CASSANDRA-11528
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-11528
             Project: Cassandra
          Issue Type: Bug
          Components: Core
         Environment: windows 7, 8 GB machine
            Reporter: Mattias W
             Fix For: 3.3
         Attachments: datastax_ddc_server-stdout.2016-04-07.log

While implementing a dump procedure, which did "select * from" from one table 
at a row, I instantly kill the server. A simple "select count(*) from"  also 
kills it. For a while, I thought the size of blobs were the cause

I also try to only have a unique id as partition key, I was afraid a single 
partition got too big or so, but that didn't change anything

It happens every time, both from Java/Clojure and from DevCenter.

I looked at the logs at C:\Program Files\DataStax-DDC\logs, but the crash is so 
quick, so nothing is recorded there.

There is a Java-out-of-memory in the logs, but that isn't from the time of the 
crash.

It only happens for one table, it only has 15000 entries, but there are blobs 
and byte[] stored there, size between 100kb - 4Mb. Total size for that table is 
about 6.5 GB on disk.

I made a workaround by doing many small selects instead, each only fetching 100 
rows.

Is there a setting a can set to make the system log more eagerly, in order to 
at least get a stacktrace or similar, that might help you.

It is the prun_srv that dies. Restarting the NT service makes Cassandra run 
again



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