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Posted to commits@impala.apache.org by ta...@apache.org on 2021/02/05 22:11:51 UTC
[impala] 02/02: IMPALA-10475: [DOCS] elaborate SYNC_DDL option
This is an automated email from the ASF dual-hosted git repository.
tarmstrong pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/impala.git
commit 81d5377c27f1940235db332e43f1d0f073cf3d2f
Author: Shajini Thayasingh <st...@cloudera.com>
AuthorDate: Fri Feb 5 10:43:53 2021 -0800
IMPALA-10475: [DOCS] elaborate SYNC_DDL option
call out that SYNC_DDL applies to all filesystem-based tables
Change-Id: I3f1bfce8430c681515101d00cabf9d70ae52e5ec
Reviewed-on: http://gerrit.cloudera.org:8080/17027
Tested-by: Impala Public Jenkins <im...@cloudera.com>
Reviewed-by: Tim Armstrong <ta...@cloudera.com>
---
docs/topics/impala_sync_ddl.xml | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/docs/topics/impala_sync_ddl.xml b/docs/topics/impala_sync_ddl.xml
index 7dd007b..793e9b4 100644
--- a/docs/topics/impala_sync_ddl.xml
+++ b/docs/topics/impala_sync_ddl.xml
@@ -46,13 +46,13 @@ under the License.
you quickly switched to another node, such as by issuing a subsequent query through a load-balancing proxy.)
</p>
- <p>
- Although <codeph>INSERT</codeph> is classified as a DML statement, when the <codeph>SYNC_DDL</codeph> option
- is enabled, <codeph>INSERT</codeph> statements also delay their completion until all the underlying data and
- metadata changes are propagated to all Impala nodes. Internally, Impala inserts have similarities with DDL
- statements in traditional database systems, because they create metadata needed to track HDFS block locations
- for new files and they potentially add new partitions to partitioned tables.
- </p>
+ <p> Although <codeph>INSERT</codeph> is classified as a DML statement, when the
+ <codeph>SYNC_DDL</codeph> option is enabled, <codeph>INSERT</codeph> statements also delay
+ their completion until all the underlying data and metadata changes are propagated to all
+ Impala nodes and this option applies to all filesystem-based tables. Internally, Impala
+ inserts have similarities with DDL statements in traditional database systems, because they
+ create metadata needed to track HDFS block locations for new files and they potentially add
+ new partitions to partitioned tables. </p>
<note>
Because this option can introduce a delay after each write operation, if you are running a sequence of