# VCF store with ~2000 gVCF files, can't export

**URL:** <https://forum.tiledb.com/t/vcf-store-with-2000-gvcf-files-cant-export/815>\
**Category:** Uncategorized\
**Created:** [November 11, 2025, 12:43am UTC](https://forum.tiledb.com/t/vcf-store-with-2000-gvcf-files-cant-export/815 "2025-11-11T00:43:14Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Michaeljon\_Miller](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.tiledb.com/michaeljon_miller/32/386_2.png) [@Michaeljon\_Miller](https://forum.tiledb.com/u/Michaeljon_Miller)\
**Post date:** [November 11, 2025, 12:43am UTC](https://forum.tiledb.com/t/vcf-store-with-2000-gvcf-files-cant-export/815/1 "2025-11-11T00:43:14Z")

</div>

Before turning the keys over to our researchers, who I know are know are going to try to export data to multi-sample gVCF, I thought I’d try something simple. So I imported a subset of our gVCF data into a bucket on S3.

If I run `tiledbvcf list` on that bucket I eventually, like 5 minutes, get a list of sample names back. If I run `tiledbvcf export` on that bucket without specifying samples and using a tiny 2kbp range `NC_000001.11:28000-29000`, I’m running out of memory. I’ve allocated 64Gb and still get errors. I can export 10 samples, but that’s not going to cut it for a GWAS experiment.

```auto
[2025-11-10 16:31:28.310] [tiledb-vcf] [Process: 3709885] [Thread: 3709885] [critical] Exception: SparseIndexReaderBase: Cannot set array memory budget (5153960755.200001) because it is smaller than the current memory usage (28763909118).

```

The dataset was created using

```auto
tiledbvcf create --uri s3://the-path --enable-allele-count --enable-variant-stats --enable-sample-stats --attributes 'info_*','fmt_*'

```

Am I missing something in the configuration here?