[flink] branch master updated: [hotfix][docs][table] Fix more typos in time attributes doc

[tw...@apache.org]

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twalthr pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/flink.git


The following commit(s) were added to refs/heads/master by this push:
     new 1325599  [hotfix][docs][table] Fix more typos in time attributes doc
1325599 is described below

commit 1325599153b162fc85679589cab0c2691bf398f1
Author: Timo Walther <tw...@apache.org>
AuthorDate: Mon Jan 14 14:05:46 2019 +0100

    [hotfix][docs][table] Fix more typos in time attributes doc
---
 docs/dev/table/streaming/time_attributes.md | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/docs/dev/table/streaming/time_attributes.md b/docs/dev/table/streaming/time_attributes.md
index 9522909..9014d2a 100644
--- a/docs/dev/table/streaming/time_attributes.md
+++ b/docs/dev/table/streaming/time_attributes.md
@@ -256,9 +256,12 @@ val windowedTable = table.window(Tumble over 10.minutes on 'UserActionTime as 'u
 
 ### Using a TableSource
 
-The event time attribute is defined by a `TableSource` that implements the `DefinedRowtimeAttribute` interface. The `getRowtimeAttribute()` method returns the name of an existing field that carries the event time attribute of the table and is of type `LONG` or `TIMESTAMP`.
+The event time attribute is defined by a `TableSource` that implements the `DefinedRowtimeAttributes` interface. The `getRowtimeAttributeDescriptors()` method returns a list of `RowtimeAttributeDescriptor` for describing the final name of a time attribute, a timestamp extractor to derive the values of the attribute, and the watermark strategy associated with the attribute.
 
-Moreover, the `DataStream` returned by the `getDataStream()` method must have watermarks assigned that are aligned with the defined time attribute. Please note that the timestamps of the `DataStream` (the ones which are assigned by a `TimestampAssigner`) are ignored. Only the values of the `TableSource`'s rowtime attribute are relevant.
+Please make sure that the `DataStream` returned by the `getDataStream()` method is aligned with the defined time attribute.
+The timestamps of the `DataStream` (the ones which are assigned by a `TimestampAssigner`) are only considered if a `StreamRecordTimestamp` timestamp extractor is defined.
+Watermarks of a `DataStream` are only preserved if a `PreserveWatermarks` watermark strategy is defined.
+Otherwise, only the values of the `TableSource`'s rowtime attribute are relevant.
 
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