Apache
/
hbase
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

HBASE-18275 Formatting and grammar mistakes in schemadoc chapter (Artem Ervits)

This commit is contained in:
tedyu 2017-06-27 19:18:02 -07:00
parent 8da6f069c3
commit b313043542
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
src/main/asciidoc/_chapters/schema_design.adoc
View File

@ -748,7 +748,7 @@ This approach would be useful if scanning by hostname was a priority.
[[schema.casestudies.log_timeseries.revts]]
==== Timestamp, or Reverse Timestamp?
If the most important access path is to pull most recent events, then storing the timestamps as reverse-timestamps (e.g., `timestamp = Long.MAX_VALUE – timestamp`) will create the property of being able to do a Scan on `[hostname][log-event]` to obtain the quickly obtain the most recently captured events.
If the most important access path is to pull most recent events, then storing the timestamps as reverse-timestamps (e.g., `timestamp = Long.MAX_VALUE – timestamp`) will create the property of being able to do a Scan on `[hostname][log-event]` to obtain the most recently captured events.
Neither approach is wrong, it just depends on what is most appropriate for the situation.
@ -1152,7 +1152,7 @@ Detect regionserver failure as fast as reasonable. Set the following parameters:
- `dfs.client.read.shortcircuit = true`
- `dfs.client.read.shortcircuit.buffer.size = 131072` (Important to avoid OOME)
* Ensure data locality. In `hbase-site.xml`, set `hbase.hstore.min.locality.to.skip.major.compact = 0.7` (Meaning that 0.7 \<= n \<= 1)
* Make sure DataNodes have enough handlers for block transfers. In `hdfs-site`.xml``, set the following parameters:
* Make sure DataNodes have enough handlers for block transfers. In `hdfs-site.xml`, set the following parameters:
- `dfs.datanode.max.xcievers >= 8192`
- `dfs.datanode.handler.count =` number of spindles