rdhabalia opened a new pull request #4090: [pulsar-function] Fix NPE and log error when java-instance jar path not set URL: https://github.com/apache/pulsar/pull/4090 ### Motivation When java-instance jar path is not set, function internally throws NPE without logging any root-cause. ``` java.lang.NullPointerException: null at org.apache.pulsar.common.nar.NarClassLoader.<init>(NarClassLoader.java:175) at org.apache.pulsar.common.nar.NarClassLoader.getFromArchive(NarClassLoader.java:147) at org.apache.pulsar.functions.utils.functioncache.FunctionCacheEntry.<init>(FunctionCacheEntry.java:73) at org.apache.pulsar.functions.utils.functioncache.FunctionCacheManagerImpl.registerFunctionInstanceWithArchive(FunctionCacheManagerImpl.java:125) at org.apache.pulsar.functions.instance.JavaInstanceRunnable.loadJars(JavaInstanceRunnable.java:238) at org.apache.pulsar.functions.instance.JavaInstanceRunnable.setupJavaInstance(JavaInstanceRunnable.java:147) at org.apache.pulsar.functions.instance.JavaInstanceRunnable.run(JavaInstanceRunnable.java:188) at java.lang.Thread.run(Thread.java:748) ```
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