GitHub user mfenniak opened a pull request:
https://github.com/apache/kafka/pull/2087
MINOR: Fix NPE when Connect offset contains non-primitive type
When storing a non-primitive type in a Connect offset, the following
NullPointerException will occur:
```
07:18:23.702 [pool-3-thread-1] ERROR o.a.k.c.storage.OffsetStorageWriter -
CRITICAL: Failed to serialize offset data, making it impossible to commit
offsets under namespace tenant-db-bootstrap-source. This likely won't recover
unless the unserializable partition or offset information is overwritten.
07:18:23.702 [pool-3-thread-1] ERROR o.a.k.c.storage.OffsetStorageWriter -
Cause of serialization failure:
java.lang.NullPointerException: null
at
org.apache.kafka.connect.storage.OffsetUtils.validateFormat(OffsetUtils.java:51)
at
org.apache.kafka.connect.storage.OffsetStorageWriter.doFlush(OffsetStorageWriter.java:143)
at
org.apache.kafka.connect.runtime.WorkerSourceTask.commitOffsets(WorkerSourceTask.java:319)
... snip ...
```
The attached patch fixes the specific case where OffsetUtils.validateFormat
is attempting to provide a useful error message, but fails to because the
schemaType method could return null.
This contribution is my original work and I license the work to the project
under the project's open source license.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/mfenniak/kafka
fix-npr-with-clearer-error-message
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/kafka/pull/2087.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #2087
----
commit 9f4fbefde16d01a6a3ff331be580ee3764675ede
Author: Mathieu Fenniak <mathieu.fenn...@replicon.com>
Date: 2016-11-01T13:31:58Z
Fix exception thrown when non-primitive type is stored in offset
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