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Cherry-pick 4 PRs related to tikv-importer to release-2.1 #4369

merged 4 commits into from Mar 14, 2019


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commented Mar 13, 2019

Signed-off-by: Lonng
Signed-off-by: kennytm

What have you changed? (mandatory)

Cherry-picks the following 4 PRs for 2.1.6 release:

  • #4347 (increase default region-split-size to 512 MiB)
  • #4348 (store intermediate SST files on disk instead of memory)
  • #4350 (restrict memory usage by RocksDB)
  • #4352 (wait after split before scatter)

What are the type of the changes? (mandatory)

  • Improvement (change which is an improvement to an existing feature)
  • Bug fix (change which fixes an issue)

How has this PR been tested? (mandatory)

Tested manually using a data set with size 6.5 TB

Does this PR affect documentation (docs) update? (mandatory)


Does this PR affect tidb-ansible update? (mandatory)

Yes (will be filed separately, together with Lightning changes)

Refer to a related PR or issue link (optional)

See above

Benchmark result if necessary (optional)

Add a few positive/negative examples (optional)

kennytm added some commits Mar 12, 2019

import: increase default region-split-size to 512 MiB (#4347)
This makes the SST size to upload larger, which reduces the number of SST
files needed to ingested, and improve overall speed.

Signed-off-by: kennytm <>
import: store the intermediate SST files on disk instead of memory (#…

* import: store the intermediate SST files on disk instead of memory

The bottle-neck of Importer is in SST ingestion on the TiKV side, not
disk I/O. Storing these SST in RAM will just increase the chance Importer
getting killed by OOM.

Signed-off-by: kennytm <>
import: fix #4257, restrict memory usage by RocksDB (#4350)
* import: put index and filter in block cache to restrict memory usage

Signed-off-by: Lonng <>
Signed-off-by: kennytm <>
import: wait after split before scatter (#4352)
Signed-off-by: kennytm <>

@kennytm kennytm force-pushed the kennytm:importer-cherry-pick-batch-1 branch from 3cbc72e to b207a99 Mar 13, 2019


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commented Mar 13, 2019

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@huachaohuang huachaohuang merged commit 229c423 into tikv:release-2.1 Mar 14, 2019

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@kennytm kennytm deleted the kennytm:importer-cherry-pick-batch-1 branch Mar 14, 2019

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