From a276aac71af11ab11db4a65296baec072a04107a Mon Sep 17 00:00:00 2001 From: Peter Somogyi Date: Wed, 16 May 2018 13:13:25 +0200 Subject: [PATCH] HBASE-20573 Add to prefix-tree removal section in upgrade doc, how to undo dependency before upgrade --- src/main/asciidoc/_chapters/upgrading.adoc | 3 +++ 1 file changed, 3 insertions(+) diff --git a/src/main/asciidoc/_chapters/upgrading.adoc b/src/main/asciidoc/_chapters/upgrading.adoc index f7b101a873..d1e9c622a7 100644 --- a/src/main/asciidoc/_chapters/upgrading.adoc +++ b/src/main/asciidoc/_chapters/upgrading.adoc @@ -419,6 +419,9 @@ This feature was removed because it as not being actively maintained. If interes sweet facility which improved random read latencies at the expensive of slowed writes, write the HBase developers list at _dev at hbase dot apache dot org_. +The prefix-tree encoding needs to be removed from all tables before upgrading to HBase 2.0+. +To do first you need to change the encoding from PREFIX_TREE to something else that is supported in HBase 2.0. +After that you have to major compact the tables that were using PREFIX_TREE encoding before. [[upgrade2.0.metrics]] .Changed metrics -- 2.17.0