执行NiFi encryptconfig命令遭遇Java堆内存不足错误求助

执行以下命令时：

./encrypt-config.sh -n $NIFI_HOME/conf/nifi.properties  -f /opt/nifi/data/flow.xml.gz -s password -x

出现如下堆内存溢出异常：

ERROR [main] org.apache.nifi.toolkit.encryptconfig.EncryptConfigMain: java.lang.OutOfMemoryError: Java heap space at java.util.Arrays.copyOf(Arrays.java:3332) at java.lang.AbstractStringBuilder.ensureCapacityInternal(AbstractStringBuilder.java:124) at java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:596) at java.lang.StringBuilder.append(StringBuilderWriter.java:142) at org.apache.commons.io.IOUtils.copyLarge(IOUtils.java:2538) at org.apache.commons.io.IOUtils.copyLarge(IOUtils.java:2516) at org.apache.commons.io.IOUtils.copy(IOUtils.java:2493) at org.apache.commons.io.IOUtils.copy(IOUtils.java:2441) at org.apache.commons.io.IOUtils.toString(IOUtils.java:1084) at org.apache.commons.io.IOUtils$toString.call(Unknown Source) at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:48) at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:113) at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:133) at org.apache.nifi.properties.ConfigEncryptionTool$_loadFlowXml_closure3$_closure29.doCall(ConfigEncryptionTool.groovy:666) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:93) at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325) at org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:294) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1022) at groovy.lang.Closure.call(Closure.java:414) at groovy.lang.Closure.call(Closure.java:430) at org.codehaus.groovy.runtime.IOGroovyMethods.withCloseable(IOGroovyMethods.java:1622) at org.codehaus.groovy.runtime.NioGroovyMethods.withCloseable(NioGroovyMethods.java:1759) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.codehaus.groovy.runtime.metaclass.ReflectionMetaMethod.invoke(ReflectionMetaMethod.java:54) Java heap space

已尝试调整JVM堆内存参数，但问题仍未解决，请求技术支持。

内容的提问来源于stack exchange，提问作者Rocky Bhai