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https://issues.apache.org/jira/browse/HBASE-6768?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13543463#comment-13543463
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Andrew Purtell commented on HBASE-6768:
---------------------------------------
How is that not just an OOME from too many concurrent fetches of large objects?
HBase clients (like REST) don't stream values from the server, RPC brings them
over all at once. Then they are served out.
> HBase Rest server crashes if client tries to retrieve data size > 5 MB
> ----------------------------------------------------------------------
>
> Key: HBASE-6768
> URL: https://issues.apache.org/jira/browse/HBASE-6768
> Project: HBase
> Issue Type: Bug
> Components: REST
> Affects Versions: 0.90.5
> Reporter: Mubarak Seyed
> Assignee: Jimmy Xiang
> Labels: noob
>
> I have a CF with one qualifier, data size is > 5 MB, when i try to read the
> raw binary data as octet-stream using curl, rest server got crashed and curl
> throws exception as
> {code}
> curl -v -H "Accept: application/octet-stream"
> http://abcdefgh-hbase003.test1.test.com:9090/table1/row_key1/cf:qualifer1 >
> /tmp/out
> * About to connect() to abcdefgh-hbase003.test1.test.com port 9090
> * Trying xx.xx.xx.xxx... connected
> * Connected to abcdefgh-hbase003.test1.test.com (xx.xxx.xx.xxx) port 9090
> > GET /table1/row_key1/cf:qualifer1 HTTP/1.1
> > User-Agent: curl/7.15.5 (x86_64-redhat-linux-gnu) libcurl/7.15.5
> > OpenSSL/0.9.8b zlib/1.2.3 libidn/0.6.5
> > Host: abcdefgh-hbase003.test1.test.com:9090
> > Accept: application/octet-stream
> >
> % Total % Received % Xferd Average Speed Time Time Time
> Current
> Dload Upload Total Spent Left Speed
> 0 0 0 0 0 0 0 0 --:--:-- 0:00:02 --:--:--
> 0< HTTP/1.1 200 OK
> < Content-Length: 5129836
> < X-Timestamp: 1347338813129
> < Content-Type: application/octet-stream
> 0 5009k 0 16272 0 0 7460 0 0:11:27 0:00:02 0:11:25
> 13872transfer closed with 1148524 bytes remaining to read
> 77 5009k 77 3888k 0 0 1765k 0 0:00:02 0:00:02 --:--:--
> 3253k* Closing connection #0
> curl: (18) transfer closed with 1148524 bytes remaining to read
> {code}
> Couldn't find the exception in rest server log or no core dump either. This
> issue is constantly reproducible. Even i tried with HBase Rest client
> (HRemoteTable) and i could recreate this issue if the data size is > 10 MB
> (even with MIME_PROTOBUF accept header)
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