wrong args for environment subassignment

[wanlinrong]

Error in env[[as.character(i)]] <- value : wrong args for environment subassignment Calls: ... bploop -> bploop.iterate -> -> add_inorder In addition: Warning message: In parallel::mccollect(wait = FALSE, timeout = 1) : 1 parallel job did not deliver a result

[wanlinrong]

start_rowid <- seq.int(0,count,by = yeild_size)

bp.mutiple.pra <- BiocParallel::MulticoreParam(workers = 5, progressbar = T) memory_lock <- BiocParallel::ipcid() in_file_lock <- BiocParallel::ipcid()

BiocParallel::bplapply(start_rowid, BPPARAM = bp.mutiple.pra,FUN = function(rowid){

statement <- paste('select rowid,',paste0("",SAMPLE,"",collapse = ','),' from all.data where rowid >',rowid,'limit ',yeild_size)

BiocParallel::ipclock(in_file_lock) temp <- dbGetQuery(dbfile,statement = statement) BiocParallel::ipcunlock(in_file_lock)

[mtmorgan]

@wanlinrong can you make this example more reproducible, so that I can cut-and-paste into my. own session and see the problem?

[wanlinrong]

using pbmcapply（）

[mtmorgan]

Without a reproducible example I cannot help. I would guess that you need to open the database connection on the worker (inside FUN of bplapply()) rather than assuming that it is valid in the forked process.

But it sounds like you've found an alternative solution so I will close the issue.

[fadedmeliodas]

I have the error Error in manager$availability[[as.character(result$node)]] <- TRUE : wrong args for environment subassignment is this like yours？