Alexey Kuznetsov created IGNITE-6012:
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Summary: Improve GridJettyRestHandler.processRequest()
Key: IGNITE-6012
URL: https://issues.apache.org/jira/browse/IGNITE-6012
Project: Ignite
Issue Type: Improvement
Components: rest
Affects Versions: 2.1
Reporter: Alexey Kuznetsov
Assignee: Alexey Kuznetsov
Fix For: 2.2
In case of large result
{code}
private void processRequest(String act, HttpServletRequest req,
HttpServletResponse res) {
...
json = jsonMapper.writeValueAsString(cmdRes)
....
{code}
Will fail with OOME, beacuse jsonMapper.writeValueAsString(cmdRes) internally
will create a StringBuilder and will try to allocate large amount of memory.
This could be easily fixed by writing object directly to response output stream
via.
{code}
jsonMapper.writeValue(out, cmdRes);
{code}
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