Examples with LogReadException org.apache.distributedlog.exceptions.LogReadException used on opensource projects

Example 1 with LogReadException

use of org.apache.distributedlog.exceptions.LogReadException in project bookkeeper by apache.

the class TestBKDistributedLogManager method deleteDuringRead.

@Test(timeout = 60000)
public void deleteDuringRead() throws Exception {
    String name = "distrlog-delete-with-reader";
    DistributedLogManager dlm = createNewDLM(conf, name);
    long txid = 1;
    for (long i = 0; i < 3; i++) {
        long start = txid;
        BKSyncLogWriter writer = (BKSyncLogWriter) dlm.startLogSegmentNonPartitioned();
        for (long j = 1; j <= DEFAULT_SEGMENT_SIZE; j++) {
            writer.write(DLMTestUtil.getLogRecordInstance(txid++));
        }
        BKLogSegmentWriter perStreamLogWriter = writer.getCachedLogWriter();
        writer.closeAndComplete();
        BKLogWriteHandler blplm = ((BKDistributedLogManager) (dlm)).createWriteHandler(true);
        assertNotNull(zkc.exists(blplm.completedLedgerZNode(start, txid - 1, perStreamLogWriter.getLogSegmentSequenceNumber()), false));
        Utils.ioResult(blplm.asyncClose());
    }
    LogReader reader = dlm.getInputStream(1);
    LogRecord record = reader.readNext(false);
    assert (null != record);
    DLMTestUtil.verifyLogRecord(record);
    long lastTxId = record.getTransactionId();
    dlm.delete();
    boolean exceptionEncountered;
    try {
        record = reader.readNext(false);
        while (null != record) {
            DLMTestUtil.verifyLogRecord(record);
            assert (lastTxId < record.getTransactionId());
            lastTxId = record.getTransactionId();
            record = reader.readNext(false);
        }
        // make sure the exception is thrown from readahead
        while (true) {
            reader.readNext(false);
        }
    } catch (LogReadException | LogNotFoundException | DLIllegalStateException e) {
        exceptionEncountered = true;
    }
    assertTrue(exceptionEncountered);
    reader.close();
}