每当我重新启动NIFI应用程序时，我都会遇到NIFI 1.11.4的堆空间内存问题。初始bootstrap.conf was Xms4g to Xmx8g重新启动后，我们遇到了java堆空间问题，所以我们增加到了12GB，并且运行良好。再重新启动一次(5天内(后，它不接受12GB作为最大大小，我们将其更改为14GB，然后只启动NIFI。有人能解释一下为什么NIFI每次重启都要求更多的内存吗。
ERROR [main] org.apache.nifi.NiFi Failure to launch NiFi due to java.lang.OutOfMemoryError: Java heap space
java.lang.OutOfMemoryError: Java heap space
at java.util.Arrays.copyOf(Arrays.java:3236)
at java.io.ByteArrayOutputStream.grow(ByteArrayOutputStream.java:118)
at java.io.ByteArrayOutputStream.ensureCapacity(ByteArrayOutputStream.java:93)
at java.io.ByteArrayOutputStream.write(ByteArrayOutputStream.java:153)
at com.sun.org.apache.xml.internal.serializer.WriterToUTF8Buffered.flushBuffer(WriterToUTF8Buffered.java:450)
at com.sun.org.apache.xml.internal.serializer.WriterToUTF8Buffered.write(WriterToUTF8Buffered.java:194)
at com.sun.org.apache.xml.internal.serializer.ToStream.characters(ToStream.java:1487)
at com.sun.org.apache.xml.internal.serializer.ToUnknownStream.characters(ToUnknownStream.java:814)
at com.sun.org.apache.xml.internal.serializer.ToUnknownStream.characters(ToUnknownStream.java:348)
at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(DOM2TO.java:242)
at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(DOM2TO.java:228)
at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(DOM2TO.java:228)
at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(DOM2TO.java:228)
at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(DOM2TO.java:228)
at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(DOM2TO.java:228)
at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(DOM2TO.java:228)
at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(DOM2TO.java:228)
at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(DOM2TO.java:228)
at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(DOM2TO.java:228)
at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(DOM2TO.java:228)
at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(DOM2TO.java:228)
at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(DOM2TO.java:228)
at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(DOM2TO.java:92)
at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transformIdentity(TransformerImpl.java:684)
at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:728)
at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:343)
at org.apache.nifi.controller.TemplateUtils.parseDto(TemplateUtils.java:63)
at org.apache.nifi.controller.StandardFlowSynchronizer.addLocalTemplates(StandardFlowSynchronizer.java:602)
at org.apache.nifi.controller.StandardFlowSynchronizer.sync(StandardFlowSynchronizer.java:410)
at org.apache.nifi.controller.FlowController.synchronize(FlowController.java:1376)
at org.apache.nifi.persistence.StandardXMLFlowConfigurationDAO.load(StandardXMLFlowConfigurationDAO.java:88)
at org.apache.nifi.controller.StandardFlowService.loadFromBytes(StandardFlowService.java:812)
2021-04-15 05:04:49,699 INFO [Write-Ahead Local State Provider Maintenance] org.wali.MinimalLockingWriteAheadLog org.wali.MinimalLockingWriteAheadLog@5a6f1342 checkpointed with 14464 Records and 0 Swap Files in 24 milliseconds (Stop-the-world time = 3 milliseconds, Clear Edit Logs time = 1 millis), max Transaction ID 63815
看起来您更改了不同的参数。
xms4g
实际上是启动内存配置。而xmx8g是允许的最大值。
您应该尝试将两者都设置为8g(如果这是建议您的系统使用的设置(。感谢