# There are 2 datanode(s) running and no node(s) are excluded in this operation

**URL:** <https://discuss.hail.is/t/there-are-2-datanode-s-running-and-no-node-s-are-excluded-in-this-operation/2007>\
**Category:** Hail Query & hailctl\
**Created:** [April 9, 2021, 11:16am UTC](https://discuss.hail.is/t/there-are-2-datanode-s-running-and-no-node-s-are-excluded-in-this-operation/2007 "2021-04-09T11:16:51Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Haseeb1](https://avatars.discourse-cdn.com/v4/letter/h/df705f/32.png) [@Haseeb1](https://discuss.hail.is/u/Haseeb1)\
**Post date:** [April 9, 2021, 11:16am UTC](https://discuss.hail.is/t/there-are-2-datanode-s-running-and-no-node-s-are-excluded-in-this-operation/2007/1 "2021-04-09T11:16:51Z")

</div>

Hello, While doing the sample-qc of 20k wes data, the following code is giving error;

```
relatedness_ht = hl.pc_relate(filtered_mt.GT, min_individual_maf=0.01, scores_expr=pca_scores[filtered_mt.col_key].scores,
                                      block_size=4096, min_kinship=0.088, statistics='kin')
related_samples_to_remove = hl.maximal_independent_set(pairs.i, pairs.j, False)

```

Im facing the following error;

```
Java stack trace:
org.apache.spark.SparkException: Job aborted due to stage failure: Task 172 in stage 23.0 failed 20 times, most recent failure: Lost task 172.19 in stage 23.0 (TID 13239, sample-qc-sw-prt7.us-central1-f.c.cncd-cncd.internal, executor 19): org.apache.hadoop.ipc.RemoteException(java.io.IOException): File /tmp/pcrelate-write-read-8cB5l6EDjAw39fHZuyS79m.bm/parts/part-0172-23-172-19-2ecd08d9-824d-6cfc-578b-f26d7e110ea3 could only be replicated to 0 nodes instead of minReplication (=1). There are 2 datanode(s) running and no node(s) are excluded in this operation.

```

What should i do?  
Thanks.