error when running phg create-maf-vcf to build a built practical haplotype graph (v2)
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5 weeks ago

Hi, after successfully running

phg create-ref-vcf \
--bed /data/phg/data/reference/ref_ranges.bed \
--reference-file ... \
--reference-name ... \
--db-path /data/phg

The next step failed, can't see any other log message that I can post here:

(phgv2-conda) $ phg create-maf-vcf     --db-path /data/phg     --bed /data/phg/data/reference/ref_ranges.bed     --reference-file ...fa     --maf-dir /data/phg/data/alignment_files     -o  /data/phg/data/vcf_files

[main] INFO net.maizegenetics.phgv2.utils.VariantLoadingUtils 2024-03-19 13:35:51,445: begin command:conda run -n phgv2-conda tiledbvcf stat --uri /data/phg/hvcf_dataset
[main] INFO net.maizegenetics.phgv2.utils.VariantLoadingUtils 2024-03-19 13:35:52,960: Using  TileDB datasets created in folder /data/phg.
[main] INFO net.maizegenetics.phgv2.cli.CreateMafVcf 2024-03-19 13:35:53,370: CreateASMHvcfs: calling buildRefGenomeSeq
[main] INFO net.maizegenetics.phgv2.cli.CreateMafVcf 2024-03-19 13:36:38,240: CreateASMHvcfs: processing /data/phg/data/alignment_files/HOR13942.maf
getVariantContextsfromMAF: Processing a single genome
Exception in thread "main" java.lang.NullPointerException
at biokotlin.genome.MAFToGVCF.buildRefBlockVariantInfo(MAFToGVCF.kt:990)
at biokotlin.genome.MAFToGVCF.buildTempVariants(MAFToGVCF.kt:542)
at biokotlin.genome.MAFToGVCF.buildVariantsForAllAlignments(MAFToGVCF.kt:246)
at biokotlin.genome.MAFToGVCF.getVariantContextsfromMAF(MAFToGVCF.kt:167)
at biokotlin.genome.MAFToGVCF.getVariantContextsfromMAF$default(MAFToGVCF.kt:136)
at net.maizegenetics.phgv2.cli.CreateMafVcf.getGVCFVariantsFromMafFile(CreateMafVcf.kt:142)
at net.maizegenetics.phgv2.cli.CreateMafVcf.getGVCFVariantsFromMafFile$default(CreateMafVcf.kt:141)
at net.maizegenetics.phgv2.cli.CreateMafVcf.createASMHvcfs(CreateMafVcf.kt:80)
at net.maizegenetics.phgv2.cli.CreateMafVcf.createASMHvcfs$default(CreateMafVcf.kt:67)
at net.maizegenetics.phgv2.cli.CreateMafVcf.run(CreateMafVcf.kt:611)
at com.github.ajalt.clikt.parsers.Parser.parse(Parser.kt:306)
at com.github.ajalt.clikt.parsers.Parser.parse(Parser.kt:319)
at com.github.ajalt.clikt.parsers.Parser.parse(Parser.kt:40)
at com.github.ajalt.clikt.core.CliktCommand.parse(CliktCommand.kt:458)
at com.github.ajalt.clikt.core.CliktCommand.parse$default(CliktCommand.kt:455)
at com.github.ajalt.clikt.core.CliktCommand.main(CliktCommand.kt:475)
at com.github.ajalt.clikt.core.CliktCommand.main(CliktCommand.kt:482)
at net.maizegenetics.phgv2.cli.PhgKt.main(Phg.kt:45)

Any help appreciated, Bruno

pangenome phg_v2 plants PHG • 1.6k views
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WIll you check your reference fasta and the maf file to verify the chromosome names for the MAF reference matches the chromosome names used in the reference fasta?

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Please see below lcj34 :

grep "^>" /data/phg/data/reference/reference.fa

>chr1H_LR890096.1
>chr2H_LR890097.1
>chr3H_LR890098.1
>chr4H_LR890099.1
>chr5H_LR890100.1
>chr6H_LR890101.1
>chr7H_LR890102.1
>CAJHDD010000001.1
>CAJHDD010000002.1
...
>CAJHDD010000283.1

And:

perl -lane 'print $F[1] if(/^s/)' data/alignment_files/assembly.maf | sort -u 
chr1H
chr1H_LR890096.1
chr2H
chr2H_LR890097.1
chr3H
chr3H_LR890098.1
chr4H
chr4H_LR890099.1
chr5H
chr5H_LR890100.1
chr6H
chr6H_LR890101.1
chr7H
chr7H_LR890102.1
chrUn

Only thing I can see is that unplaced contigs in the reference (CAJHDD...) do not appear in the MAF file

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In the second listing - I see they are sorted, so I cannot tell if the ref is chr1H or chr1H_LR890096.1. If the former, this would be the problem. (inconsistent ref naming). If the latter, then something else is going on . If the ref contig names are the same, the send me privately your reference file and MAF file and I'll try to debug.

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Hi the MAF file in question looks like this:

(phgv2-conda) $ perl -lne 'print substr($_,0,60)' data/alignment_files/assembly.maf       
##maf version=1
a   score=-474
s   chr4H_LR890099.1                                610201403      
s   chr4H                                           617685547      

a   score=-35615
s   chr1H_LR890096.1                                    76743      
s   chrUn                                              452495      
...

I will email you the tarred files for your debugging, thanks for the offer, Bruno

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I am re-running leaving out unplaced contigs to see if that fixes it, will let you know

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Bruno - that won't fix it. I found a problem with the BioKotlin library that phgv2 calls. I have fixed the library (also Buckler Lab code) and tested with your data. Once my fix is approved I will create a new jar file, then we'll rebuild phgv2 with this new code and make that available.

On a related note, the latest version of the phgv2 documents (as of today) are clearer on the requirements of running the annotate-fastas command. This is necessary to keep the AGC compressed assemblies (sequence) and tiledb datasets (variants) in sync with the same sample names. I don't know if you have run that step, but it shoudl be run prior to running agc-compress or align-assemblies. See the documents for further details.

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BTW - we appreciate you testing phgv2 and your patience as we work out issues.

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As agreed by email, I have now updated the phg code to version 2.2.65.114. Now I can go past that stage, only to fail with bcftools index:

[main] INFO net.maizegenetics.phgv2.utils.VariantLoadingUtils 2024-03-22 17:08:16,949: begin Command:conda run -n phgv2-conda tiledbvcf stat --uri /data/phg/hvcf_dataset
[main] INFO net.maizegenetics.phgv2.utils.VariantLoadingUtils 2024-03-22 17:08:18,546: Using  TileDB datasets created in folder /data/phg.
[main] INFO net.maizegenetics.phgv2.cli.CreateMafVcf 2024-03-22 17:08:19,051: CreateASMHvcfs: calling buildRefGenomeSeq
[main] INFO net.maizegenetics.phgv2.cli.CreateMafVcf 2024-03-22 17:09:04,488: CreateASMHvcfs: processing /data/phg/data/alignment_files/HOR13942.maf
getVariantContextsfromMAF: Processing a single genome
[main] INFO net.maizegenetics.phgv2.cli.CreateMafVcf 2024-03-22 17:24:14,229: createASMHvcfs: gvcfVariants.size == 1
[main] INFO net.maizegenetics.phgv2.cli.CreateMafVcf 2024-03-22 17:24:14,231: createASMHvcfs: processing sampleName = HOR13942
[main] INFO net.maizegenetics.phgv2.utils.VariantLoadingUtils 2024-03-22 17:30:06,941: bgzipping  file /data/phg/data/vcf_files/HOR13942.g.vcf
[main] WARN net.maizegenetics.phgv2.utils.VariantLoadingUtils 2024-03-22 17:35:43,310:
ERROR 255 creating tabix indexed  version of file: /data/phg/data/vcf_files/HOR13942.g.vcf.gz
Exception in thread "main" java.lang.IllegalStateException: bgzipAndIndexGVCFfile: error bgzipping and/or indexing file /data/phg/data/vcf_files/HOR13942.g.vcf: Message:bgzipAndIndexGVCFfile: error trying to run bcftools index -c on file /data/phg/data/vcf_files/HOR13942.g.vcf.gz: 255
...

When I run that last command manualy it says:

[E::hts_idx_push] Chromosome blocks not continuous
index: failed to create index for "/data/phg/data/vcf_files/HOR13942.g.vcf.gz"
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You will need to sort the file before indexing.

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Thanks GenoMax , I would have thought phg took care of that, right lcj34 ?

Edit: I tested sort followed by index and it worked, so I guess whatever the code is trying to index needs to be properly sorted first?

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Yes, the gvcf created by phg should have been sorted. I am able to reproduce the problem using your file. Will look into this and let you know.

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Bruno - I have fixed this issue in our library. The fix won't be available in phgv2 for a couple days as the person who creates our BioKotlin releases (phgv2 uses this library) is out early this week. It should be available by the end of the week - I'll let you know.

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Thanks lcj34

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FYI - phgv2 version Release 2.2.68.117 has the updated BioKotlin release with this fix.

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Hi lcj34 , I downloaded the latest version and got a different error now:

phg --version
phg version 2.2.68.117
...

[main] INFO net.maizegenetics.phgv2.utils.VariantLoadingUtils 2024-03-30 22:45:05,221: bgzipping  file /data/phg/data/vcf_files/HOR13942.g.vcf
[main] WARN net.maizegenetics.phgv2.utils.VariantLoadingUtils 2024-03-30 22:50:52,213:
ERROR 255 creating tabix indexed  version of file: /data/phg/data/vcf_files/HOR13942.g.vcf.gz
Exception in thread "main" java.lang.IllegalStateException: bgzipAndIndexGVCFfile: error bgzipping and/or indexing file /data/phg/data/vcf_files/HOR13942.g.vcf: Message:bgzipAndIndexGVCFfile: error trying to run bcftools index -c on file /data/phg/data/vcf_files/HOR13942.g.vcf.gz: 255
    at net.maizegenetics.phgv2.utils.VariantLoadingUtilsKt.bgzipAndIndexGVCFfile(VariantLoadingUtils.kt:140)
    at net.maizegenetics.phgv2.cli.CreateMafVcf.createASMHvcfs(CreateMafVcf.kt:88)
    at net.maizegenetics.phgv2.cli.CreateMafVcf.createASMHvcfs$default(CreateMafVcf.kt:67)
    at net.maizegenetics.phgv2.cli.CreateMafVcf.run(CreateMafVcf.kt:611)
    at com.github.ajalt.clikt.parsers.Parser.parse(Parser.kt:279)
    at com.github.ajalt.clikt.parsers.Parser.parse(Parser.kt:292)
    at com.github.ajalt.clikt.parsers.Parser.parse(Parser.kt:41)
    at com.github.ajalt.clikt.core.CliktCommand.parse(CliktCommand.kt:457)
    at com.github.ajalt.clikt.core.CliktCommand.parse$default(CliktCommand.kt:454)
    at com.github.ajalt.clikt.core.CliktCommand.main(CliktCommand.kt:474)
    at com.github.ajalt.clikt.core.CliktCommand.main(CliktCommand.kt:481)
    at net.maizegenetics.phgv2.cli.PhgKt.main(Phg.kt:46)
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Thanks, Bruno. I found a place with a missing sort call (working when BioKotlin was called directly, but when called from phgv2 a sort call was missing). I've fixed that - will let you know when the code has been reviewed and merge.

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This fix is now available in phgv2 version 2.2.72.121

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I confirm this now works with my test data, many thanks lcj34 !

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