Add "Known Issues" item for IMPALA-4828. Change-Id: If287257639589c8bd2f56a1b5de4ac1a0bb2f082 Reviewed-on: http://gerrit.cloudera.org:8080/5807 Tested-by: Impala Public Jenkins Reviewed-by: Matthew Jacobs <[email protected]>
Project: http://git-wip-us.apache.org/repos/asf/incubator-impala/repo Commit: http://git-wip-us.apache.org/repos/asf/incubator-impala/commit/a0ec5193 Tree: http://git-wip-us.apache.org/repos/asf/incubator-impala/tree/a0ec5193 Diff: http://git-wip-us.apache.org/repos/asf/incubator-impala/diff/a0ec5193 Branch: refs/heads/master Commit: a0ec519362ce679485026909a6ef7a8d7dfc355d Parents: 59dfa1f Author: John Russell <[email protected]> Authored: Thu Jan 26 17:12:28 2017 -0800 Committer: Impala Public Jenkins <[email protected]> Committed: Sat Jan 28 01:06:19 2017 +0000 ---------------------------------------------------------------------- docs/topics/impala_known_issues.xml | 39 ++++++++++++++++---------------- 1 file changed, 20 insertions(+), 19 deletions(-) ---------------------------------------------------------------------- http://git-wip-us.apache.org/repos/asf/incubator-impala/blob/a0ec5193/docs/topics/impala_known_issues.xml ---------------------------------------------------------------------- diff --git a/docs/topics/impala_known_issues.xml b/docs/topics/impala_known_issues.xml index b76545c..fee82b8 100644 --- a/docs/topics/impala_known_issues.xml +++ b/docs/topics/impala_known_issues.xml @@ -62,7 +62,7 @@ under the License. <conbody> <p> </p> - <p><b>Bug:</b> <xref href="https://issues.cloudera.org/browse/"; scope="external" format="html"></xref></p> + <p><b>Bug:</b> <xref keyref="" scope="external" format="html"></xref></p> <p><b>Severity:</b> High</p> <p><b>Resolution:</b> </p> <p><b>Workaround:</b> </p> @@ -141,6 +141,25 @@ https://issues.cloudera.org/browse/IMPALA-2144 - Don't have </conbody> + <concept id="IMPALA-4828"> + <title>Altering Kudu table schema outside of Impala may result in crash on read</title> + <conbody> + <p> + Creating a table in Impala, changing the column schema outside of Impala, + and then reading again in Impala may result in a crash. Neither Impala nor + the Kudu client validates the schema immediately before reading, so Impala may attempt to + dereference pointers that aren't there. This happens if a string column is dropped + and then a new, non-string column is added with the old string column's name. + </p> + <p><b>Bug:</b> <xref keyref="IMPALA-4828" scope="external" format="html">IMPALA-4828</xref></p> + <p><b>Severity:</b> High</p> + <p><b>Workaround:</b> Run the statement <codeph>REFRESH <varname>table_name</varname></codeph> + after any occasion when the table structure, such as the number, names, and data types + of columns, are modified outside of Impala using the Kudu API. + </p> + </conbody> + </concept> + <concept id="IMPALA-1972" rev="IMPALA-1972"> <title>Queries that take a long time to plan can cause webserver to block other queries</title> @@ -273,24 +292,6 @@ https://issues.cloudera.org/browse/IMPALA-2144 - Don't have </conbody> - <concept id="IMPALA-4106" rev="IMPALA-4106"> - <title>Use Hive Metastore bulk API for dropping multiple partitions.</title> - <conbody> - <p> - The bulk partition dropping and setting feature of IMPALA-1654 is not as efficient - as it could be, because it currently does not use the Hive Metastore bulk API. - </p> - <p><b>Bug:</b> <xref keyref="IMPALA-4106">IMPALA-4106</xref></p> - <p><b>Severity:</b> High</p> - <p><b>Workaround:</b> Schedule <codeph>ALTER TABLE</codeph> operations that touch - many partitions for times when the table is not undergoing any other DDL operations, - and be prepared for the table to be locked for some time while the <codeph>ALTER TABLE</codeph> - is in progress. Test the performance of large-scale partition operations in a development - environment before trying on tables in a production system. - </p> - </conbody> - </concept> - <concept id="IMPALA-1480" rev="IMPALA-1480"> <!-- Not part of Alex's spreadsheet. Spreadsheet has IMPALA-1423 which mentions it's similar to this one but not a duplicate. -->
