deniskuzZ commented on a change in pull request #2274:
URL: https://github.com/apache/hive/pull/2274#discussion_r632418906
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File path:
standalone-metastore/metastore-server/src/main/java/org/apache/hadoop/hive/metastore/txn/CompactionTxnHandler.java
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@@ -305,17 +302,21 @@ public void markCompacted(CompactionInfo info) throws
MetaException {
* By filtering on minOpenTxnWaterMark, we will only cleanup after
every transaction is committed, that could see
* the uncompacted deltas. This way the cleaner can clean up
everything that was made obsolete by this compaction.
*/
- String s = "SELECT \"CQ_ID\", \"CQ_DATABASE\", \"CQ_TABLE\",
\"CQ_PARTITION\", "
- + "\"CQ_TYPE\", \"CQ_RUN_AS\", \"CQ_HIGHEST_WRITE_ID\" FROM
\"COMPACTION_QUEUE\" WHERE \"CQ_STATE\" = '"
- + READY_FOR_CLEANING + "'";
- if (minOpenTxnWaterMark > 0) {
- s = s + " AND (\"CQ_NEXT_TXN_ID\" <= " + minOpenTxnWaterMark + " OR
\"CQ_NEXT_TXN_ID\" IS NULL)";
- }
+ StringBuilder sb = new StringBuilder();
Review comment:
I think, with this approach, you might end up not cleaning anything at
all as you'll be always looking at latest compaction id that might be blocked
by incoming txns.
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