Unconfigured Ad

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts
  • sfh838t
    Member
    • Apr 2014
    • 29

    problems with BBmap/java

    hi,
    I am trying to use BBmap to dedupe illumina paired end reads. (tried fastuniq but can't get past the "error in open left file first_read_name" error)
    command line I used:
    dedupe.sh in1= reads1.fq in2= reads2.fq out= outreads.fq

    output starts with
    java -Djava.library.path=..../bbmap/jni/
    -ea -Xmx77448m -Xms77448m
    -cp ...../bbmap/current/
    jgi.Dedupe in1= reads1.fq in2= reads.fq
    executing jgi.Dedupe.jgi[list of input vars]

    Dedupe version 36.92
    Exception in thread "main" java.lang.NullPointerEception
    at jgi.Dedupe.<init>(Dedupe.java:211)
    at jgi.Dedupe.main(Dedupe.java:86)

    it seems that input is assigned to vars as it should, and something is not in the location it is supposed to be found in?
    my java version is up to date, but I should say that I still do not have a good grasp on PATH
  • HESmith
    Senior Member
    • Oct 2009
    • 512

    #2
    Remove the spaces after the equals (=) signs and try again.

    Comment

    • sfh838t
      Member
      • Apr 2014
      • 29

      #3
      Jeez, would have never suspected that! Don't know if it will run through to the end ok, but it is running! thanks you very much!

      Comment

      • sfh838t
        Member
        • Apr 2014
        • 29

        #4
        BBmap not finishing

        Removing the white space after the equal sign has started BBmap running, but it has been running now (or seems to be at least, there is activity in system monitor) for about 20 hours.
        I had one message right at the start : Set AbsorbContainment to false because it is not currently supported for paired reads.

        Is this normal? both the message and the runtime?

        Comment

        • HESmith
          Senior Member
          • Oct 2009
          • 512

          #5
          From the manual: "Pair Limitations: Dedupe supports paired reads, but it was not really designed for them. When processing paired reads, some parts of Dedupe are restricted to a single thread due to a complication that causes non-deterministic output. As such, processing paired reads is slower than unpaired reads. Also, pair support is limited to exact matches and overlaps, not containments."

          'AbsorbContainments' is enabled by default. You have to disable ('=false') in the command line (which is exactly what the warning instructed you to do).

          Comment

          • sfh838t
            Member
            • Apr 2014
            • 29

            #6
            Thanks again. I had not found the manual yet.

            Comment

            Latest Articles

            Collapse

            • SEQadmin2
              Nine Things a Sample Prep Scientist Thinks About Before Sequencing
              by SEQadmin2


              I’m not a sequencing expert. I’m a purification scientist who uses NGS to evaluate workflows my group develops. With this perspective, we think about the sample first and the NGS workflow second. The sequencer is an exceptionally honest reporter, but it can only report on what you give it, so whether you get clean, interpretable data from an NGS workflow is largely determined before you begin.

              Here are nine questions we think about, in roughly the order they matter, before...
              06-18-2026, 07:11 AM
            • SEQadmin2
              From Collection to Sequencing: Why Sample Preparation and Preservation Define Sequencing Data
              by SEQadmin2


              Data variability is still an issue in sequencing technologies despite the advances in reproducibility and accuracy of these platforms. But the problem does not originate in the sequencing itself, but in the previous steps, before the sample reaches the sequencer.


              The first step is collection, followed by preservation and sample preparation for analysis. Most scientists overlook those steps, but not being careful might just be skewing the experiment’s results.
              ...
              06-02-2026, 10:05 AM

            ad_right_rmr

            Collapse

            News

            Collapse

            Topics Statistics Last Post
            Started by SEQadmin2, Today, 05:37 AM
            0 responses
            5 views
            0 reactions
            Last Post SEQadmin2  
            Started by SEQadmin2, 06-26-2026, 11:10 AM
            0 responses
            16 views
            0 reactions
            Last Post SEQadmin2  
            Started by SEQadmin2, 06-17-2026, 06:09 AM
            0 responses
            49 views
            0 reactions
            Last Post SEQadmin2  
            Started by SEQadmin2, 06-09-2026, 11:58 AM
            0 responses
            109 views
            0 reactions
            Last Post SEQadmin2  
            Working...