shanthoosh removed a comment on issue #1007: SAMZA-2173: Fix NullPointerException in SetConfig MessageFormat when configurations are deleted. URL: https://github.com/apache/samza/pull/1007#issuecomment-486012041 @prateekm Currently to delete a key in coordinator stream, samza produces the message (key, value: null) into the coordinator-stream. This was the behavior since 0.9 version of samza. Previously upto 0.8 version of samza, to delete a key, we used to serialize the null value into the json message and publish it to coordinator stream. Here's a sample message taken from the coordinator stream which follows this pattern in production. ```json offset: 314005 LogAppendTime: 1555029967663 key: [1,"set-config","random-key"] payload: {"host":"random-host","source":"job-runner","values":{"value":null},"username":"random","timestamp":1255429967479} ``` To handle this null value serialized as json, we need the changes in this patch.
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