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https://issues.apache.org/jira/browse/HIVE-8732?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14199268#comment-14199268
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Dain Sundstrom commented on HIVE-8732:
--------------------------------------
How will the code know that the stripe/file indexes are broken (i.e., written
with the current writer and not the new one)? BWT, the current reader will
read files with future version numbers; you only get a warning message:
{code:java}
if (major > OrcFile.Version.CURRENT.getMajor() ||
(major == OrcFile.Version.CURRENT.getMajor() &&
minor > OrcFile.Version.CURRENT.getMinor())) {
log.warn("ORC file " + path +
" was written by a future Hive version " +
versionString(version) +
". This file may not be readable by this version of Hive.");
}
{code}
> ORC string statistics are not merged correctly
> ----------------------------------------------
>
> Key: HIVE-8732
> URL: https://issues.apache.org/jira/browse/HIVE-8732
> Project: Hive
> Issue Type: Bug
> Components: File Formats
> Reporter: Owen O'Malley
> Assignee: Owen O'Malley
> Priority: Blocker
> Fix For: 0.14.0
>
> Attachments: HIVE-8732.patch
>
>
> Currently ORC's string statistics do not merge correctly causing incorrect
> maximum values.
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