[ARVADOS] updated: 1.1.4-784-g57fd7c42e

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Summary of changes:
 doc/admin/upgrading.html.textile.liquid | 4 ++++
 1 file changed, 4 insertions(+)

       via  57fd7c42e7e447bcd9174b6b0fbde011d2db37bd (commit)
      from  a2c87cc8989f8076367a8245c810560ece55f7e7 (commit)

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commit 57fd7c42e7e447bcd9174b6b0fbde011d2db37bd
Author: Tom Clegg <tclegg at veritasgenetics.com>
Date:   Mon Aug 13 10:10:36 2018 -0400

    Note slow migration in upgrade notes.
    
    refs #13752
    
    Arvados-DCO-1.1-Signed-off-by: Tom Clegg <tclegg at veritasgenetics.com>

diff --git a/doc/admin/upgrading.html.textile.liquid b/doc/admin/upgrading.html.textile.liquid
index 55f39f7d8..ff7f1804c 100644
--- a/doc/admin/upgrading.html.textile.liquid
+++ b/doc/admin/upgrading.html.textile.liquid
@@ -30,6 +30,10 @@ Note to developers: Add new items at the top. Include the date, issue number, co
 TODO: extract this information based on git commit messages and generate changelogs / release notes automatically.
 {% endcomment %}
 
+h3. 2018-08-09: "21bf21abe":https://dev.arvados.org/projects/arvados/repository/revisions/21bf21abe includes a slow migration
+* The migration removes the size constraint on the file_names column in the collections table, and reparses all manifests to fix any truncated values.
+* Migration time depends on the size and number of collections in the database. Our test clusters processed about 20K collections per minute.
+
 h3. 2018-07-31: "#13497":https://dev.arvados.org/issues/13497 "db5107dca":https://dev.arvados.org/projects/arvados/repository/revisions/db5107dca adds a new system service, arvados-controller
 * "Install the controller":../install/install-controller.html after upgrading your system.
 * Verify your setup by confirming that API calls appear in the controller's logs (_e.g._, @journalctl -fu arvados-controller@) while loading a workbench page.

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