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Diffstat (limited to 'notes')
| -rw-r--r-- | notes/scaling_works.md | 72 |
1 files changed, 71 insertions, 1 deletions
diff --git a/notes/scaling_works.md b/notes/scaling_works.md index 814e46f..3de4214 100644 --- a/notes/scaling_works.md +++ b/notes/scaling_works.md @@ -2,7 +2,7 @@ Run a partial ~5 million paper batch through: zcat /srv/fatcat_scholar/release_export.2019-07-07.5mil_fulltext.json.gz \ - | parallel -j8 --linebuffer --round-robin --pipe python -m fatcat_scholar.work_pipeline run_releases \ + | parallel -j8 --line-buffer --round-robin --pipe python -m fatcat_scholar.work_pipeline run_releases \ | pv -l \ | gzip > data/work_intermediate.5mil.json.gz => 5M 21:36:14 [64.3 /s] @@ -14,6 +14,76 @@ Run a partial ~5 million paper batch through: indexing to ES seems to take... an hour per million? or so. can check index monitoring to get better number +## 2020-07-23 First Full Release Batch + +Patched to skip fetching `pdftext` + +Run full batch through (on aitio), expecting this to take on the order of a +week: + + zcat /fast/download/release_export_expanded.json.gz \ + | parallel -j8 --line-buffer --compress --round-robin --pipe python -m fatcat_scholar.work_pipeline run_releases \ + | pv -l \ + | gzip > /grande/snapshots/fatcat_scholar_work_fulltext.20200723.json.gz + +Ah, this was running really slow because `MINIO_SECRET_KEY` was not set. Really +should replace `minio` python client library as we are now using seaweedfs! + +Got an error: + + 36.1M 15:29:38 [ 664 /s] + parallel: Error: Output is incomplete. Cannot append to buffer file in /fast/tmp. Is the disk full? + parallel: Error: Change $TMPDIR with --tmpdir or use --compress. + Warning: unable to close filehandle properly: No space left on device during global destruction. + +Might have been due to `/` filling up (not `/fast/tmp`)? Had gotten pretty far +in to processing. Restarted, will keep an eye on it. + +To index, run from ES machine, as bnewbold: + + ssh aitio.us.archive.org cat /grande/snapshots/fatcat_scholar_work_fulltext.partial.20200723.json.gz \ + | gunzip \ + | sudo -u fatcat parallel -j8 --linebuffer --round-robin --pipe pipenv run python -m fatcat_scholar.transform run_transform \ + | esbulk -verbose -size 100 -id key -w 4 -index qa_scholar_fulltext_v01 -type _doc + +Hrm, again: + + 99.9M 56:04:41 [ 308 /s] + parallel: Error: Output is incomplete. Cannot append to buffer file in /fast/tmp. Is the disk full? + parallel: Error: Change $TMPDIR with --tmpdir or use --compress. + +Confirmed that disk was full in that moment; frustrating as had checked in and +disk usage was low enough before, and data was flowing to /grande (large +spinning disk). Should be sufficient to move release dump to `/bigger` and +clear more space on `/fast` to do the full indexing. + + /dev/sdg1 917G 871G 0 100% /fast + + vs. + + /dev/sdg1 917G 442G 430G 51% /fast + + -rw-rw-r-- 1 bnewbold bnewbold 418G Jul 27 05:55 fatcat_scholar_work_fulltext.20200723.json.gz + +Got to about 2/3 of full release dump. Current rough estimates for total +processing times: + + enrich 150 million releases: 80hr (3-4 days), 650 GByte on disk (gzip) + transform and index 150 million releases: 55hr (2-3 days), 1.5 TByte on disk (?) + +## ES Performance Iteration (2020-07-27) + +- schema: switch abstracts from nested to simple array +- query: include fewer fields: just biblio (with boost; and maybe title) and "everything" +- query: use date-level granularity for time queries (may already do this?) +- set replica=0 (for now) +- set shards=12, to optimize *individual query* performance + => if estimating 800 GByte index size, this is 60-70 GByte per shard +- set `index.codec=best_compression` to leverage CPU vs. disk I/O +- ensure transform output is sorted by key + => <https://www.elastic.co/guide/en/elasticsearch/reference/current/tune-for-disk-usage.html#_put_fields_in_the_same_order_in_documents> +- ensure number of cores is large + ## Work Grouping Plan for work-grouped expanded release dumps: |