| package org.apache.cassandra.db.commitlog; |
| |
| import java.util.ArrayList; |
| import java.util.Collection; |
| |
| import org.junit.Test; |
| |
| import org.apache.cassandra.cql3.CQLTester; |
| import org.apache.cassandra.db.ColumnFamilyStore; |
| |
| public class CommitLogCQLTest extends CQLTester |
| { |
| @Test |
| public void testTruncateSegmentDiscard() throws Throwable |
| { |
| String otherTable = createTable("CREATE TABLE %s (idx INT, data TEXT, PRIMARY KEY(idx));"); |
| |
| createTable("CREATE TABLE %s (idx INT, data TEXT, PRIMARY KEY(idx));"); |
| execute("INSERT INTO %s (idx, data) VALUES (?, ?)", 15, Integer.toString(15)); |
| flush(); |
| |
| // We write something in different table to advance the commit log position. Current table remains clean. |
| execute(String.format("INSERT INTO %s.%s (idx, data) VALUES (?, ?)", keyspace(), otherTable), 16, Integer.toString(16)); |
| |
| ColumnFamilyStore cfs = getCurrentColumnFamilyStore(); |
| assert cfs.getTracker().getView().getCurrentMemtable().isClean(); |
| // Calling switchMemtable directly applies Flush even though memtable is empty. This can happen with some races |
| // (flush with recycling by segment manager). It should still tell commitlog that the memtable's region is clean. |
| // CASSANDRA-12436 |
| cfs.switchMemtable(); |
| |
| execute("INSERT INTO %s (idx, data) VALUES (?, ?)", 15, Integer.toString(17)); |
| |
| Collection<CommitLogSegment> active = new ArrayList<>(CommitLog.instance.allocator.getActiveSegments()); |
| CommitLog.instance.forceRecycleAllSegments(); |
| |
| // If one of the previous segments remains, it wasn't clean. |
| active.retainAll(CommitLog.instance.allocator.getActiveSegments()); |
| assert active.isEmpty(); |
| } |
| } |