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| author | Sean Owen <sowen@cloudera.com> | 2016-07-21 09:23:41 +0100 |
|---|---|---|
| committer | Sean Owen <sowen@cloudera.com> | 2016-07-21 09:23:41 +0100 |
| commit | 864b764eafa57a1418b683ccf6899b01bab28fba (patch) | |
| tree | 2d38b287d2a36d889ab9b5de8c90d75303eafbde /sql/core/src/main/java | |
| parent | 1bf13ba3a24aa002bfaa660588490e527c5bf243 (diff) | |
| download | spark-864b764eafa57a1418b683ccf6899b01bab28fba.tar.gz spark-864b764eafa57a1418b683ccf6899b01bab28fba.tar.bz2 spark-864b764eafa57a1418b683ccf6899b01bab28fba.zip | |
[SPARK-16226][SQL] Weaken JDBC isolation level to avoid locking when writing partitions
## What changes were proposed in this pull request?
Saving partitions to JDBC in transaction can use a weaker transaction isolation level to reduce locking. Use better method to check if transactions are supported.
## How was this patch tested?
Existing Jenkins tests.
Author: Sean Owen <sowen@cloudera.com>
Closes #14054 from srowen/SPARK-16226.
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