# Issue with opensearch client **URL:** \ **Category:** OpenSearch Client Libraries\ **Tags:** opensearch-java\ **Created:** [September 12, 2024, 7:50am UTC](https://forum.opensearch.org/t/issue-with-opensearch-client/21409 "2024-09-12T07:50:57Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![gabinvallet](https://avatars.discourse-cdn.com/v4/letter/g/b782af/32.png) [@gabinvallet](https://forum.opensearch.org/u/gabinvallet)\ **Post date:** [September 12, 2024, 7:50am UTC](https://forum.opensearch.org/t/issue-with-opensearch-client/21409/1 "2024-09-12T07:50:57Z")
**Versions** (relevant - OpenSearch/Dashboard/Server OS/Browser): Opensearch 2.14.0 opensearch-java 2.14.0 (but I’ve tried several versions, was 2.11.1 at first) opensearch-rest-client 2.16.0 (but I’ve tried several versions, was 2.8.3 at first) **Describe the issue** : Hello, A while back, I’ve created a topic on this forum regarding a particular issue: > [@How to get the reindexation tasks with java opensearch client?](https://forum.opensearch.org/t/how-to-get-the-reindexation-tasks-with-java-opensearch-client/17376): > > Versions (relevant - OpenSearch/Dashboard/Server OS/Browser): Opensearch 2.4.1 opensearch-java 2.8.1 opensearch test-containers 2.0.1 opensearch-rest-client 2.11.1 Describe the issue: Hello everyone, First of all, I wish you a happy new year ! As for the matter at hand, I am currently trying to reduce the size of our opensearch, as it has gotten quite consequent over the years. To do so, I have a java 21 application that will get the list of all our indexes, and reindex them one at a tim… To sum it up here, I have an application that will basically reindex data from one mapping to another one. To check that my reindexation occured properly, I want to use the tasks API to be able to check that the reindexation of one index succeeded, before moving on to the next one. To do so, I use the response from my previous post (retrieving the tasksId, and then using it to retrieve the next one, I just use GetTasksRequest and GetTasksResponse) and it used to work perfectly: GetTasksRequest getTasksRequest = new GetTasksRequest.Builder().taskId(migrationIndex.getTaskId()).build(); GetTasksResponse getTasksResponse = elasticsearchConnector.client.tasks().get(getTasksRequest); return getTasksResponse.completed(); I hadn’t started the project in a few months, and a few days ago, I restarted it and noticed that this specific request now fails everytime a task is completed (but when the task is still ongoing, it seems to be working just fine), almost as if the tasks API responds a message that’s not compatible with the java client. I’ll put the error message in the screenshots part. A few precisions: - When I request in the devtool of opensearch dashboard I retrieve the task properly. - In my test containers, it works fine too So if someone knows why this now doesn’t work anymore it would help a lot, thanks for any clue you might give me **Relevant Logs or Screenshots** : ![image](https://us1.discourse-cdn.com/flex019/uploads/mauve_hedgehog/original/2X/9/90a95e3e41528ff4d02c27ca7bb256d210e7d840.png) ---
**Author:** ![reta](https://avatars.discourse-cdn.com/v4/letter/r/cdc98d/32.png) [@reta](https://forum.opensearch.org/u/reta)\ **Post date:** [September 12, 2024, 1:27pm UTC](https://forum.opensearch.org/t/issue-with-opensearch-client/21409/2 "2024-09-12T13:27:39Z")
@gabinvallet please check [[BUG] UnexpectedJsonEventException reading task that failed · Issue #666 · opensearch-project/opensearch-java · GitHub](https://github.com/opensearch-project/opensearch-java/issues/666) ---
**Author:** ![gabinvallet](https://avatars.discourse-cdn.com/v4/letter/g/b782af/32.png) [@gabinvallet](https://forum.opensearch.org/u/gabinvallet)\ **Post date:** [September 12, 2024, 2:03pm UTC](https://forum.opensearch.org/t/issue-with-opensearch-client/21409/3 "2024-09-12T14:03:53Z")
Thanks for your answer Reta, if I understand correctly it means that this issue is stuck for now right ? ---
**Author:** ![reta](https://avatars.discourse-cdn.com/v4/letter/r/cdc98d/32.png) [@reta](https://forum.opensearch.org/u/reta)\ **Post date:** [September 12, 2024, 3:18pm UTC](https://forum.opensearch.org/t/issue-with-opensearch-client/21409/4 "2024-09-12T15:18:37Z")
Probably better to say, not fixed but help is very welcome. ---
**Author:** ![gabinvallet](https://avatars.discourse-cdn.com/v4/letter/g/b782af/32.png) [@gabinvallet](https://forum.opensearch.org/u/gabinvallet)\ **Post date:** [September 12, 2024, 3:38pm UTC](https://forum.opensearch.org/t/issue-with-opensearch-client/21409/5 "2024-09-12T15:38:17Z")
Okay thanks for your answer, I’ll check more into details if I have some time 🙂 ---
**Author:** ![system](https://us1.discourse-cdn.com/flex019/uploads/mauve_hedgehog/original/2X/3/33547ea01a5b12dcca2958411d3edd97ae2ea8c1.png) [@system](https://forum.opensearch.org/u/system)\ **Post date:** [November 11, 2024, 3:38pm UTC](https://forum.opensearch.org/t/issue-with-opensearch-client/21409/6 "2024-11-11T15:38:33Z")
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