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Retriable error #11

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Retriable error #11

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1e2f4e9
Error Handling for Cassandra
Dec 9, 2024
b825681
Added error handling changes for cassandra
narendra3488 Dec 9, 2024
ccdd0e0
Merge remote-tracking branch 'origin/main' into retriable_error
narendra3488 Dec 9, 2024
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30 changes: 30 additions & 0 deletions ...rcedb/src/main/java/com/google/cloud/teleport/v2/templates/transforms/SourceWriterFn.java
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Original file line number Diff line number Diff line change
Expand Up @@ -15,9 +15,13 @@
*/
package com.google.cloud.teleport.v2.templates.transforms;

import com.datastax.oss.driver.api.core.DriverException;
import com.datastax.oss.driver.api.core.DriverExecutionException;
import com.datastax.oss.driver.api.core.DriverTimeoutException;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.github.nosan.embedded.cassandra.CassandraException;
import com.google.cloud.spanner.Mutation;
import com.google.cloud.spanner.SpannerException;
import com.google.cloud.teleport.v2.spanner.ddl.Ddl;
Expand Down Expand Up @@ -56,6 +60,7 @@
import org.apache.beam.sdk.transforms.DoFn;
import org.apache.beam.sdk.values.KV;
import org.apache.beam.sdk.values.TupleTag;
import org.apache.zookeeper.KeeperException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

Expand Down Expand Up @@ -251,12 +256,37 @@ public void processElement(ProcessContext c) {
outputWithTag(c, Constants.PERMANENT_ERROR_TAG, ex.getMessage(), spannerRec);
}
} catch (Exception ex) {
handleExceptions(ex, c, spannerRec);
LOG.error("Failed to write to source", ex);
// outputWithTag(c, Constants.PERMANENT_ERROR_TAG, ex.getMessage(), spannerRec);
}
}
}

private void handleExceptions(Exception ex, ProcessContext c, TrimmedShardedDataChangeRecord spannerRec) {
if (ex instanceof DriverException) {
LOG.error("Cassandra-related exception occurred: ", ex);
if (isRetryableCassandraError((com.datastax.driver.core.exceptions.DriverException) ex)) {
outputWithTag(c, Constants.RETRYABLE_ERROR_TAG, ex.getMessage(), spannerRec);
retryableRecordCountMetric.inc();
} else {
outputWithTag(c, Constants.PERMANENT_ERROR_TAG, ex.getMessage(), spannerRec);
}
} else {
LOG.error("Unexpected exception while writing to source", ex);
outputWithTag(c, Constants.PERMANENT_ERROR_TAG, ex.getMessage(), spannerRec);
}
}

private boolean isRetryableCassandraError(com.datastax.driver.core.exceptions.DriverException ex) {
return ex instanceof com.datastax.driver.core.exceptions.NoHostAvailableException ||
ex instanceof com.datastax.driver.core.exceptions.UnavailableException ||
ex instanceof com.datastax.driver.core.exceptions.ReadTimeoutException ||
ex instanceof com.datastax.driver.core.exceptions.WriteTimeoutException ||
ex instanceof com.datastax.driver.core.exceptions.OverloadedException ||
ex instanceof com.datastax.driver.core.exceptions.OperationTimedOutException;
}

private Mutation getShadowTableMutation(
String tableName,
String shadowTableName,
Expand Down
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