Github user myui commented on the issue:
https://github.com/apache/incubator-hivemall/pull/22
@maropu It seems GC is still happening for some cases...
```
HivemallFeatureOpsSuite:
No output has been received in the last 10m0s, this potentially indicates a
stalled build or something wrong with the build itself.
```
`MaxPermGen=1024m` might be too big to need more space for others. Do we
need `-MaxPermGen` ? Less parameter is better for configuring JVM.
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