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The following commit(s) were added to refs/heads/0.15.0-incubating by this push:
new 990390b Fix performance-faq and remove insert-segment-to-db redirects
(#7759) (#7814)
990390b is described below
commit 990390be2d10caef01617fa2856a7a059fddf048
Author: Jihoon Son <[email protected]>
AuthorDate: Sat Jun 1 14:54:18 2019 -0700
Fix performance-faq and remove insert-segment-to-db redirects (#7759)
(#7814)
---
docs/_redirects.json | 3 +--
docs/content/querying/groupbyquery.md | 3 ++-
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/docs/_redirects.json b/docs/_redirects.json
index 1ab3a9c..e053a62 100644
--- a/docs/_redirects.json
+++ b/docs/_redirects.json
@@ -54,7 +54,7 @@
{"source": "Other-Hadoop.html", "target": "operations/other-hadoop.html"},
{"source": "Papers-and-talks.html", "target": "misc/papers-and-talks.html"},
{"source": "Peons.html", "target": "design/peons.html"},
- {"source": "Performance-FAQ.html", "target":
"operations/performance-faq.html"},
+ {"source": "Performance-FAQ.html", "target":
"operations/basic-cluster-tuning.html"},
{"source": "Plumber.html", "target": "design/plumber.html"},
{"source": "Post-aggregations.html", "target":
"querying/post-aggregations.html"},
{"source": "Query-Context.html", "target": "querying/query-context.html"},
@@ -165,6 +165,5 @@
{"source": "development/community-extensions/kafka-simple.html", "target":
"../extensions-contrib/kafka-simple.html"},
{"source": "development/community-extensions/rabbitmq.html", "target":
"../extensions-contrib/rabbitmq.html"},
{"source": "development/extensions-core/namespaced-lookup.html", "target":
"lookups-cached-global.html"},
- {"source": "operations/insert-segment-to-db.html", "target":
"../index.html"},
{"source": "operations/performance-faq.html", "target":
"../operations/basic-cluster-tuning.html"}
]
diff --git a/docs/content/querying/groupbyquery.md
b/docs/content/querying/groupbyquery.md
index 125d793..1445fee 100644
--- a/docs/content/querying/groupbyquery.md
+++ b/docs/content/querying/groupbyquery.md
@@ -288,7 +288,8 @@ disk space.
With groupBy v2, cluster operators should make sure that the off-heap hash
tables and on-heap merging dictionaries
will not exceed available memory for the maximum possible concurrent query
load (given by
-druid.processing.numMergeBuffers). See [How much direct memory does Druid
use?](../operations/performance-faq.html) for more details.
+druid.processing.numMergeBuffers). See the [Basic Cluster Tuning
Guide](../operations/basic-cluster-tuning.html)
+for more details about direct memory usage, organized by Druid process type.
Brokers do not need merge buffers for basic groupBy queries. Queries with
subqueries (using a "query" [dataSource](datasource.html#query-data-source))
require one merge buffer if there is a single subquery, or two merge buffers if
there is more than one layer of nested subqueries. Queries with
[subtotals](groupbyquery.html#more-on-subtotalsspec) need one merge buffer.
These can stack on top of each other: a groupBy query with multiple layers of
nested subqueries, and that also uses subto [...]
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