Github user DaveBirdsall commented on a diff in the pull request:
https://github.com/apache/trafodion/pull/1361#discussion_r159526555
--- Diff: docs/provisioning_guide/src/asciidoc/_chapters/requirements.adoc
---
@@ -331,13 +331,38 @@ default. Depending on the size of a user table, we
have experienced timeout fail
from this setting. The underlying issue is the length of the execution of
the coprocessor within HBase.
+
NOTE: HBase uses the smaller of `hbase.rpc.timeout` and
`hbase.client.scanner.timeout.period` to calculate the scanner timeout.
-| hbase.snapshot.master.timeoutMillis and hbase.snapshot.region.timeout |
10 minutes | HBase's default setting is 60000 milliseconds.
+| hbase.snapshot.master.timeoutMillis
+
+and
+
+hbase.snapshot.region.timeout | 10 minutes | HBase's default setting is
60000 milliseconds.
If you experience timeout issues with HBase snapshots when you use the
{project-name} Bulk Loader or other statements,
you can set the value for these two HBase properties to 10 minutes
(600,000 milliseconds).
-| hbase.hregion.max.filesize | 107374182400 bytes | HBase's default
setting is 10737418240 (10 GB). We have increased the setting to
-107374182400 (100 GB), which reduces the number of HStoreFiles per table
and appears to reduce disruptions to active transactions from
+| hbase.hregion.max.filesize | 107374182400 bytes | HBase's default
setting is 10737418240 bytes (10 GB). You can increased the setting to
+107374182400 bytes (100 GB), which reduces the number of HStoreFiles per
table and appears to reduce disruptions to active transactions from
region splitting.
-| hbase.hstore.blockingStoreFiles | 10 |
http://gbif.blogspot.com/2012/07/optimizing-writes-in-hbase.html
+| hbase.hregion.memstore.block.multiplier | 7
+
+When you have enough memory, you can increase this value to 7 so that more
data can be temporarily accepted before flushing to disk instead of blocking
writes.
+|This property blocks any further writes from clients to memstores if the
memstores exceed the value of `multiplier * flush size`.
+
+Default value: 2
+| hbase.hregion.memstore.flush.size | 536870912 bytes | HBase uses
memstore to buffer data before writing it to disk. Once the data in memstore
has outgrown this size, it is flushed as an HFile to disk.
+
+Default value: 134217728 bytes (128M)
+| hbase.hstore.blockingStoreFiles | 200 |
http://gbif.blogspot.com/2012/07/optimizing-writes-in-hbase.html
+
+This property blocks any further writes from memstores to HFile, after
existing HFile number hitting this limit until compactions are completed.
--- End diff --
Suggested wordsmith: "This property blocks any further writes from memstore
to HFiles, after the number of existing HFiles hits this limit, until
compactions are completed."
---
