# Unexpected higher total ops \[7\] compared to expected \[6\]

**URL:** <https://discuss.elastic.co/t/unexpected-higher-total-ops-7-compared-to-expected-6/367988>\
**Category:** Elasticsearch\
**Created:** [September 30, 2024, 5:25am UTC](https://discuss.elastic.co/t/unexpected-higher-total-ops-7-compared-to-expected-6/367988 "2024-09-30T05:25:09Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![Chanaka\_Liyanarachch](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/chanaka_liyanarachch/32/97624_2.png) [@Chanaka\_Liyanarachch](https://discuss.elastic.co/u/Chanaka_Liyanarachch)\
**Post date:** [September 30, 2024, 5:25am UTC](https://discuss.elastic.co/t/unexpected-higher-total-ops-7-compared-to-expected-6/367988/1 "2024-09-30T05:25:10Z")

</div>

I'm getting the below error from time to time and every time, the master node Goes down due to the below error,

```auto
[2024-09-24T15:39:12,682][ERROR][o.e.b.ElasticsearchUncaughtExceptionHandler] [xxx-xxx-xxxx-elasticsearch-master-1] fatal error in thread [elasticsearch[xxx-xxxx-xxxx-elasticsearch-master-1][search][T#2]], exiting
java.lang.AssertionError: unexpected higher total ops [7] compared to expected [6]
        at org.elasticsearch.action.search.AbstractSearchAsyncAction.onShardFailure(AbstractSearchAsyncAction.java:403) ~[elasticsearch-7.10.0.jar:7.10.0]
        at org.elasticsearch.action.search.AbstractSearchAsyncAction.lambda$performPhaseOnShard$2(AbstractSearchAsyncAction.java:270) ~[elasticsearch-7.10.0.jar:7.10.0]
        at org.elasticsearch.action.search.AbstractSearchAsyncAction$2.doRun(AbstractSearchAsyncAction.java:303) ~[elasticsearch-7.10.0.jar:7.10.0]
        at org.elasticsearch.common.util.concurrent.AbstractRunnable.run(AbstractRunnable.java:37) ~[elasticsearch-7.10.0.jar:7.10.0]
        at org.elasticsearch.common.util.concurrent.TimedRunnable.doRun(TimedRunnable.java:44) ~[elasticsearch-7.10.0.jar:7.10.0]
        at org.elasticsearch.common.util.concurrent.ThreadContext$ContextPreservingAbstractRunnable.doRun(ThreadContext.java:737) ~[elasticsearch-7.10.0.jar:7.10.0]
        at org.elasticsearch.common.util.concurrent.AbstractRunnable.run(AbstractRunnable.java:37) ~[elasticsearch-7.10.0.jar:7.10.0]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130) ~[?:?]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:630) ~[?:?]
        at java.lang.Thread.run(Thread.java:832) [?:?]
Caused by: org.elasticsearch.action.search.SearchPhaseExecutionException: Shard failures
        ... 10 more
Caused by: org.elasticsearch.tasks.TaskCancelledException: The parent task was cancelled, shouldn't start any child tasks
        at org.elasticsearch.tasks.TaskManager$CancellableTaskHolder.registerChildNode(TaskManager.java:522) ~[elasticsearch-7.10.0.jar:7.10.0]
        at org.elasticsearch.tasks.TaskManager.registerChildNode(TaskManager.java:213) ~[elasticsearch-7.10.0.jar:7.10.0]
        at org.elasticsearch.transport.TransportService.sendRequest(TransportService.java:629) ~[elasticsearch-7.10.0.jar:7.10.0]
        at org.elasticsearch.transport.TransportService.sendChildRequest(TransportService.java:712) ~[elasticsearch-7.10.0.jar:7.10.0]
        at org.elasticsearch.transport.TransportService.sendChildRequest(TransportService.java:704) ~[elasticsearch-7.10.0.jar:7.10.0]
        at org.elasticsearch.action.search.SearchTransportService.sendExecuteQuery(SearchTransportService.java:139) ~[elasticsearch-7.10.0.jar:7.10.0]
        at org.elasticsearch.action.search.SearchQueryThenFetchAsyncAction.executePhaseOnShard(SearchQueryThenFetchAsyncAction.java:83) ~[elasticsearch-7.10.0.jar:7.10.0]
        at org.elasticsearch.action.search.AbstractSearchAsyncAction.lambda$performPhaseOnShard$3(AbstractSearchAsyncAction.java:244) ~[elasticsearch-7.10.0.jar:7.10.0]
        at org.elasticsearch.action.search.AbstractSearchAsyncAction.performPhaseOnShard(AbstractSearchAsyncAction.java:279) ~[elasticsearch-7.10.0.jar:7.10.0]
        at org.elasticsearch.action.search.AbstractSearchAsyncAction.onShardFailure(AbstractSearchAsyncAction.java:406) ~[elasticsearch-7.10.0.jar:7.10.0]
        at org.elasticsearch.action.search.AbstractSearchAsyncAction.access$100(AbstractSearchAsyncAction.java:70) ~[elasticsearch-7.10.0.jar:7.10.0]
        at org.elasticsearch.action.search.AbstractSearchAsyncAction$1.onFailure(AbstractSearchAsyncAction.java:258) ~[elasticsearch-7.10.0.jar:7.10.0]
        at org.elasticsearch.action.search.SearchExecutionStatsCollector.onFailure(SearchExecutionStatsCollector.java:73) ~[elasticsearch-7.10.0.jar:7.10.0]
        at org.elasticsearch.action.ActionListenerResponseHandler.handleException(ActionListenerResponseHandler.java:59) ~[elasticsearch-7.10.0.jar:7.10.0]
        at org.elasticsearch.action.search.SearchTransportService$ConnectionCountingHandler.handleException(SearchTransportService.java:408) ~[elasticsearch-7.10.0.jar:7.10.0]
        at org.elasticsearch.transport.TransportService.sendRequest(TransportService.java:670) ~[elasticsearch-7.10.0.jar:7.10.0]

```

---

<div class="post-metadata">

**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\
**Post date:** [September 30, 2024, 5:59am UTC](https://discuss.elastic.co/t/unexpected-higher-total-ops-7-compared-to-expected-6/367988/2 "2024-09-30T05:59:15Z")

</div>

> [@Chanaka\_Liyanarachch](#):
>
> `[elasticsearch-7.10.0.jar:7.10.0]`

You are running a very old version that is EOL so I would recommend you upgrade to at least version 7.17 to see if that resolves the issue.

[EDIT] This seems to be reported [in this issue](https://github.com/elastic/elasticsearch/issues/71453) and appear to [have been fixed in version 7.11](https://github.com/elastic/elasticsearch/pull/65415), so my recommendation to upgrade to 7.17 should resolve this.