flume采集数据报错 ：java.lang.OutOfMemoryError: GC overhead limit exceeded

Exception in thread “PollableSourceRunner-SQLSource-sourceTest” java.lang.OutOfMemoryError: GC overhead limit exceeded
at org.hibernate.type.AbstractStandardBasicType.getOptions(AbstractStandardBasicType.java:394)
at org.hibernate.type.AbstractStandardBasicType.nullSafeGet(AbstractStandardBasicType.java:262)
at org.hibernate.type.AbstractStandardBasicType.nullSafeGet(AbstractStandardBasicType.java:258)
at org.hibernate.loader.custom.ScalarResultColumnProcessor.extract(ScalarResultColumnProcessor.java:71)
at org.hibernate.loader.custom.ResultRowProcessor.buildResultRow(ResultRowProcessor.java:100)
at org.hibernate.loader.custom.ResultRowProcessor.buildResultRow(ResultRowProcessor.java:77)
at org.hibernate.loader.custom.CustomLoader.getResultColumnOrRow(CustomLoader.java:425)
at org.hibernate.loader.Loader.getRowFromResultSet(Loader.java:754)
at org.hibernate.loader.Loader.processResultSet(Loader.java:953)
at org.hibernate.loader.Loader.doQuery(Loader.java:921)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:355)
at org.hibernate.loader.Loader.doList(Loader.java:2554)
at org.hibernate.loader.Loader.doList(Loader.java:2540)
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2370)
at org.hibernate.loader.Loader.list(Loader.java:2365)
at org.hibernate.loader.custom.CustomLoader.list(CustomLoader.java:353)
at org.hibernate.internal.SessionImpl.listCustomQuery(SessionImpl.java:1909)
at org.hibernate.internal.AbstractSessionImpl.list(AbstractSessionImpl.java:311)
at org.hibernate.internal.SQLQueryImpl.list(SQLQueryImpl.java:141)
at org.keedio.flume.source.HibernateHelper.executeQuery(HibernateHelper.java:89)
at org.keedio.flume.source.SQLSource.process(SQLSource.java:89)
at org.apache.flume.source.PollableSourceRunner$PollingRunner.run(PollableSourceRunner.java:139)
at java.lang.Thread.run(Thread.java:745)

##解决办法：
进入flume bin目录下，修改flume-ng文件，如下图：

红框的地方默认是20m，可以根据自己服务器内存大小设置，我这里设置的是10240m(也就是10个g)

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