"\"bootstrap_snapshot_source_index\":1}");
ckpt_ss.assertCheckpoint();
long numRowsReadFromDb = 1;
BootstrapEventCallback callback1 = EasyMock.createMock(BootstrapEventCallback.class);
EasyMock.replay(callback1);
BootstrapEventCallback callback2 = EasyMock.createMock(BootstrapEventCallback.class);
callback2.onCheckpointEvent(ckpt_ss, null);
EasyMock.replay(callback2);
BootstrapEventCallback callback3 = EasyMock.createMock(BootstrapEventCallback.class);
callback3.onCheckpointEvent(ckpt_ss, null);
EasyMock.replay(callback3);
// No checkpoint when result is null
bp.writeCkptIfAppropriate(null, callback1, numRowsReadFromDb, ckpt_ss, "test");