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From mi...@apache.org
Subject hbase git commit: HBASE-13446 Add docs warning about missing data for downstream on versions prior to HBASE-13262
Date Mon, 10 Aug 2015 04:05:37 GMT
Repository: hbase
Updated Branches:
  refs/heads/master aad7fbe6c -> 0daae4334


HBASE-13446 Add docs warning about missing data for downstream on versions prior to HBASE-13262


Project: http://git-wip-us.apache.org/repos/asf/hbase/repo
Commit: http://git-wip-us.apache.org/repos/asf/hbase/commit/0daae433
Tree: http://git-wip-us.apache.org/repos/asf/hbase/tree/0daae433
Diff: http://git-wip-us.apache.org/repos/asf/hbase/diff/0daae433

Branch: refs/heads/master
Commit: 0daae433423da12343d4a64fdc987ffa64d4785f
Parents: aad7fbe
Author: Misty Stanley-Jones <mstanleyjones@cloudera.com>
Authored: Mon Aug 10 09:20:08 2015 +1000
Committer: Misty Stanley-Jones <mstanleyjones@cloudera.com>
Committed: Mon Aug 10 14:05:14 2015 +1000

----------------------------------------------------------------------
 src/main/asciidoc/_chapters/troubleshooting.adoc | 8 ++++++++
 src/main/asciidoc/_chapters/upgrading.adoc       | 8 ++++++++
 2 files changed, 16 insertions(+)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/hbase/blob/0daae433/src/main/asciidoc/_chapters/troubleshooting.adoc
----------------------------------------------------------------------
diff --git a/src/main/asciidoc/_chapters/troubleshooting.adoc b/src/main/asciidoc/_chapters/troubleshooting.adoc
index 1776c9e..a2c9247 100644
--- a/src/main/asciidoc/_chapters/troubleshooting.adoc
+++ b/src/main/asciidoc/_chapters/troubleshooting.adoc
@@ -559,6 +559,14 @@ You can also tail all the logs at the same time, edit files, etc.
 
 For more information on the HBase client, see <<client,client>>.
 
+=== Missed Scan Results Due To Mismatch Of `hbase.client.scanner.max.result.size` Between
Client and Server
+If either the client or server version is lower than 0.98.11/1.0.0 and the server
+has a smaller value for `hbase.client.scanner.max.result.size` than the client, scan
+requests that reach the server's `hbase.client.scanner.max.result.size` are likely
+to miss data. In particular, 0.98.11 defaults `hbase.client.scanner.max.result.size`
+to 2 MB but other versions default to larger values. For this reason, be very careful
+using 0.98.11 servers with any other client version.
+
 [[trouble.client.scantimeout]]
 === ScannerTimeoutException or UnknownScannerException
 

http://git-wip-us.apache.org/repos/asf/hbase/blob/0daae433/src/main/asciidoc/_chapters/upgrading.adoc
----------------------------------------------------------------------
diff --git a/src/main/asciidoc/_chapters/upgrading.adoc b/src/main/asciidoc/_chapters/upgrading.adoc
index 6b63833..9742654 100644
--- a/src/main/asciidoc/_chapters/upgrading.adoc
+++ b/src/main/asciidoc/_chapters/upgrading.adoc
@@ -204,6 +204,14 @@ See the release notes on the issue link:https://issues.apache.org/jira/browse/HB
 .Distributed Log Replay
 <<distributed.log.replay>> is off by default in HBase 1.0.0. Enabling it can
make a big difference improving HBase MTTR. Enable this feature if you are doing a clean stop/start
when you are upgrading. You cannot rolling upgrade to this feature (caveat if you are running
on a version of HBase in excess of HBase 0.98.4 -- see link:https://issues.apache.org/jira/browse/HBASE-12577[HBASE-12577
Disable distributed log replay by default] for more).
 
+.Mismatch Of `hbase.client.scanner.max.result.size` Between Client and Server
+If either the client or server version is lower than 0.98.11/1.0.0 and the server
+has a smaller value for `hbase.client.scanner.max.result.size` than the client, scan
+requests that reach the server's `hbase.client.scanner.max.result.size` are likely
+to miss data. In particular, 0.98.11 defaults `hbase.client.scanner.max.result.size`
+to 2 MB but other versions default to larger values. For this reason, be very careful
+using 0.98.11 servers with any other client version.
+
 [[upgrade1.0.rolling.upgrade]]
 ==== Rolling upgrade from 0.98.x to HBase 1.0.0
 .From 0.96.x to 1.0.0


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