What are the common problems with map-side join?
A. The most common problem with map-side joins is introducing a high level of code complexity. This complexity has several downsides: increased risk of bugs and performance degradation. Developers are cautioned to rarely use map-side joins.
B. The most common problem with map-side joins is lack of the avaialble map slots since map-side joins require a lot of mappers.
C. The most common problems with map-side joins are out of memory exceptions on slave nodes.
D. The most common problem with map-side join is not clearly specifying primary index in the join. This can lead to very slow performance on large datasets.
Answer:C
What are the common problems with map-side join?
A. The most common problem with map-side joins is introducing a high level of code complexity. This complexity has several downsides: increased risk of bugs and performance degradation. Developers are cautioned to rarely use map-side joins. B. The most common problem with map-side joins is lack of the avaialble map slots since map-side joins require a lot of mappers. C. The most common problems with map-side joins are out of memory exceptions on slave nodes. D. The most common problem with map-side join is not clearly specifying primary index in the join. This can lead to very slow performance on large datasets.