Github user zsxwing commented on a diff in the pull request:
https://github.com/apache/spark/pull/16918#discussion_r100937204
--- Diff: docs/structured-streaming-kafka-integration.md ---
@@ -187,50 +303,68 @@ The following options must be set for the Kafka
source.
The following configurations are optional:
<table class="table">
-<tr><th>Option</th><th>value</th><th>default</th><th>meaning</th></tr>
+<tr><th>Option</th><th>value</th><th>default</th><th>mode</th><th>meaning</th></tr>
<tr>
<td>startingOffsets</td>
- <td>earliest, latest, or json string
+ <td>earliest, latest (streaming only), or json string
{"topicA":{"0":23,"1":-1},"topicB":{"0":-2}}
</td>
- <td>latest</td>
+ <td>streaming=latest, batch=earliest</td>
+ <td>streaming and batch</td>
<td>The start point when a query is started, either "earliest" which is
from the earliest offsets,
"latest" which is just from the latest offsets, or a json string
specifying a starting offset for
each TopicPartition. In the json, -2 as an offset can be used to refer
to earliest, -1 to latest.
- Note: This only applies when a new Streaming query is started, and that
resuming will always pick
- up from where the query left off. Newly discovered partitions during a
query will start at
+ Note: For Batch, latest (either implicitly or by using -1 in json) is
not allowed.
+ For Streaming, this only applies when a new Streaming query is started,
and that resuming will
+ always pick up from where the query left off. Newly discovered
partitions during a query will start at
earliest.</td>
</tr>
<tr>
+ <td>endingOffsets</td>
+ <td>latest or json string
+ {"topicA":{"0":23,"1":-1},"topicB":{"0":-1}}
+ </td>
+ <td>latest</td>
+ <td>batch only</td>
+ <td>The end point when a batch query is started, either "latest" which
is just from the latest
--- End diff --
nit: a json string specifying **a starting** offset for each
TopicPartition. -> a json string specifying **an ending** offset for each
TopicPartition.
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