FuzzyRowFilterAdapter is missing from FilterAdapter

[ZubairNabi]

I've been trying to get FuzzyRowFilter to work, but out of the box I get the following exception:

Caused by: com.google.cloud.bigtable.hbase.adapters.filters.UnsupportedFilterException: Unsupported filters encountered: FilterSupportStatus{isSupported=false, reason='Don't know how to adapt Filter class 'class org.apache.hadoop.hbase.filter.FuzzyRowFilter''}

I can see that there's an adapter for it in the codebase but it's not in the filter map within FileAdapter. Putting it in the map causes the previous exception to obviously go away but then I get a dependency conflict:

Caused by: java.lang.NoSuchMethodError: org.apache.hadoop.hbase.protobuf.generated.HBaseProtos$BytesBytesPair.getFirst()Lcom/google/bigtable/repackaged/com/google/protobuf/ByteString;
    at com.google.cloud.bigtable.hbase.adapters.filters.FuzzyRowFilterAdapter.extractFuzzyRowFilterPairs(FuzzyRowFilterAdapter.java:90)
    at com.google.cloud.bigtable.hbase.adapters.filters.FuzzyRowFilterAdapter.adapt(FuzzyRowFilterAdapter.java:48)
    at com.google.cloud.bigtable.hbase.adapters.filters.FuzzyRowFilterAdapter.adapt(FuzzyRowFilterAdapter.java:39)
    at com.google.cloud.bigtable.hbase.adapters.filters.SingleFilterAdapter.adapt(SingleFilterAdapter.java:56)
    at com.google.cloud.bigtable.hbase.adapters.filters.FilterAdapter.adaptFilter(FilterAdapter.java:143)
    at com.google.cloud.bigtable.hbase.adapters.ScanAdapter.createUserFilter(ScanAdapter.java:116)
    at com.google.cloud.bigtable.hbase.adapters.ScanAdapter.buildFilter(ScanAdapter.java:77)
    at com.google.cloud.bigtable.hbase.adapters.ScanAdapter.adapt(ScanAdapter.java:94)
    at com.google.cloud.bigtable.hbase.adapters.HBaseRequestAdapter.adapt(HBaseRequestAdapter.java:70)
    at com.google.cloud.bigtable.hbase.BigtableTable.getScanner(BigtableTable.java:206)

This seems to be a subtle dependency issue due to the mismatch between protobuf versions used by HBase and BigTable but all shading attempts on my part have been futile so far. Any idea how I can side-step this issue?

[sduskis]

The dependency mismatch issue strikes again. I'm going to have to mull over this one. I'll see what I can do about this, since it's a bit tricky. Perhaps we can use reflection instead of the FuzzyRowFilter proto conversion to get the fuzzyKeysData. I'm not sure that I can fix this problem this week, given the short week, but I'll work on this as a high priority issue and hopefully submit a PR next week.

[sduskis]

There are quite a few issues with our current implementation of the FuzzyRowFilterAdapter. Even once I fix the bugs, we won't be able to easily completely replicate the HBase FuzzyRowFilter implementation. HBase will allow some cases that we won't; specifically, if the row size is smaller than the keys supplied to the filter. In the meantime, you can use a FilterList of RowFilter with RegexStringComparator.

[ZubairNabi]

Thanks for looking into this.
And yes, I've gone ahead and replaced my FuzzyRowFilter with a RegexStringComparator based approach.

[sduskis]

I still didn't get to this. This will have to come in the next release.

[manolama]

+1 on this guy as I just learned how wonderfully useful this filter is.